The study of the structure and shape of the body and its parts and their relationships to one another is called
anatomy
Which system is most dependent on a normal atmospheric pressure?
respiratory system
Which of these body parts is distal to the crural region
tarsal region
Physical trauma to a body organ is known as blunt trauma. Organs in which body cavity account for most blunt trauma injuries?
abdominal cavity
Which of these terms refers to a body area found on the dorsal surface?
popliteal
Which of these planes would show the heart, lungs, and liver in the same section?
frontal (coronal) plane
What cavity is superior to the diaphragm?
thoracic
Which of these carries out the commands of a homeostatic control center?
effector
Which of these describes the effect of a negative feedback mechanism?
reduces the intensity of the initial stimulus
Anatomical Position
Standing erect, palms facing anterior, feet slightly apart, anterior body view, thumbs lateral.
not anatomical position
sitting down, posterior body view, palms facing posterior, thumbs medial, feet together
Which of these is an example of physiology
The liver produces many of the blood proteins
What organ system is responsible for breaking down food into molecules that can be absorbed by the body?
digestive system
Which of these is an organ of the urinary system
kidney
Which of the following levels of organization is inclusive of all others?
organ system level
Melanin is a protein pigment that protects us from ultraviolet radiation. What level of structural organization is the classification of melanin?
chemical level
What necessary function does muscle contraction contribute to the human body?
movement
The right and left iliac (inguinal) regions are lateral to the ________ region.
hypogastric (pubic)
Which of the following is visible when viewing the anterior of a human body in anatomical position?
patellar region
What are the two components of the first and simplest level of organization?
Atoms and molecules
What is the smallest unit of life?
Cells.
Select the correct order of the levels of organization in the body, from the most simple to the most complex levels:
Chemical, cellular, tissue, organ, organ system
Select the options that correctly define and exemplify a tissue:
Cardiac muscle is an example of a tissue.A tissue is made of thousands of similar cells with common functions.
The thoracic cavity is separated from the abdominopelvic cavity by the diaphragm.
True
A patient in the emergency department complains of pain in her right upper quadrant (RUQ). What organ is least likely to be the cause for her pain?
Urinary bladder
The surgeon created an opening in the chest during surgery. The incision was made along a plane that equally separated the right and left halves of the thoracic cavity. This section is known as a(n)
median (midsagittal) section
In reference to the relationship between the patellar and popliteal regions, which of the following statements is correct?
The patellar region is anterior to the popliteal region.
A body part that is considered lateral is assumed to be
away from the midline of the body
Ventral is a directional term synonymous with ________ in humans.
anterior
Which of these regions is distal to the antebrachial region?
carpal region
Which organ system is the slow-acting control system of the body?
endocrine system
What are two organ systems that are involved in the excretion of wastes from the body?
digestive and urinary
Glands of the nervous system release chemicals called hormones into the blood.
False
A young child sustained a baseball hit to his cranial cavity. Which bones were fractured?
Skull
Which of these internal body cavities is the most inferior
Pelvic cavity
The orbital cavities house the
eyes
The lungs and heart are situated in the ________ body cavity
thoracic
The dorsal body cavity houses the
spinal cord and brain
Transverse or cross sections divide the body into anterior and posterior parts.
False
What is the overall effect of a negative feedback mechanism?
reduces or stops the initial stimulus
Which of the following is an example of a homeostatic imbalance?
being sick with the flu
The navel is located in the ________ region of the abdominopelvic cavity.
umbilical
There is no physical structure that separates the abdominal cavity from the pelvic cavity.
True
In anatomical position, a person is assumed to be standing erect.
True
inter
means "within" "inside" or "between"
Endo
"within
Centr
center
exo
outside
cyto
cell
The process of bringing something into a cell is called
endocytosis
The button-like structure that holds homologous chromosomes together at their middles during cell division is called the
centromere
The process of sending something outside of a cell is called
exocytosis
The cellular material between the cell membrane and the nucleus is called
cytoplasm
The stage of the cellular lifecycle between divisions is called
interphase
The cells in our bodies are made up primarily of which four elements
carbon, hydrogen, oxygen, and nitrogen
Which organelle synthesizes proteins that are used in the cytoplasm
ribosomes that are free within the cytoplasm
What part of the plasma membrane is hydrophobic?
phospholipid "tails
Which of these organelles is responsible for forming secretory vesicles
Golgi apparatus
Rheumatoid arthritis is a disease in which acid hydrolase enzymes escape from leaky cellular organelles, causing pain and a burning sensation in joints. The leaky organelles from which these acid hydrolase enzymes escape are the __________.
lysosomes
The final processing of proteins "tagged" for secretion occurs in which cellular organelle?
Golgi apparatus
Part completeWhich of the following is the main component of the cell membrane
phospholipids
Which of the following is a characteristic of the cell membrane
semipermeable
Which of the following is not a major function of proteins in the cell membrane
forming the entire glycocalyx
What part of a cell membrane is usually in contact with the interstitial fluid
phosphate heads of phospholipids
A primary active transport process is one in which __________.
molecules move through transport proteins that have been activated by ATP
Some transport processes use transport proteins in the plasma membrane, but do not require ATP. This type of transport is known as
facilitated diffusion
The majority of water molecules moving across plasma membranes by osmosis do so via a process that is most similar to
facilitated diffusion
The sodium-potassium pump uses ATP to move sodium and potassium ions across the plasma membrane. This statement describes _____.
primary active transport
A vesicle fuses with the plasma membrane and releases its contents to the extracellular fluid. This statement describes
exocytosis
During which phase of the cell cycle does DNA duplication, or replication, take place
Interphase
When a double helix of DNA is replicated, two complete helices are formed. Together, these helices are called sister
chromatids
During which phase of mitosis do sister chromatids line up at the center of the cell
Metaphase
During which phase of mitosis do the sister chromatids move apart
Anaphase
During which phase of mitosis do nuclear envelopes and the nucleoli reappear
Telophase
During which phase of mitosis do the nuclear envelope and nucleoli disappear?
Prophase
What is the name of the process by which the cytoplasm divides in two
Cytokinesis
Which of the following best explains diffusion?
movement of molecules from an area of high concentration to an area of low concentration
Which of the following is most likely to move through the cell membrane by facilitated diffusion
Na+
What is the basic difference between simple diffusion and facilitated diffusion across a cell membrane?
In facilitated diffusion, molecules only move with the aid of a protein in the membrane.
Which of the following is least likely to increase the rate of diffusion?
small concentration gradient
Which of the following is not required for osmosis to occur?
cellular energy
Which of the following solutions contains the most solute
hypertonic
In general, to maintain homeostasis the relationship between our intracellular and extracellular fluids should be which of the following?
isotonic to each other
If a person is severely dehydrated, their extracellular fluids will become hypertonic to the intracellular fluid. What do you predict will happen to the person’s cells?
The cells will lose water and shrink
Which of the following lists, in correct order, the phases of interphase?
G1, S, and G2
Which of the following lists, in correct order, the phases of mitosis?
prophase, metaphase, anaphase, telophase
During which of the following phases does DNA replication occur?
Synthesis
During which of the following phases does chromatin condense and become chromosomes
prophase
A large amount of extracellular material is a characteristic of which type of tissue
connective tissue
Which type of muscle is characterized by the presence of striations and intercalated discs?
cardiac muscle
What is the significance of granulation tissue
It formed during tissue repair.
What type of tissue has cells that are tightly packed, sits on a basement membrane, is avascular, and is easily regenerated
epithelium
Describe the process of tissue repair, Phase 1:
inflammation, permeable capillaries bring in " repair" chemicals, clot forms and area is walled off
Describe the process of tissue repair, Phase 2:
Granulation, delicate pink tissue fills in the damaged area
Describe the process of tissue repair, Phase 3
Regeneration and fibrosis, formation of function tissue occurs
What happens when body cells are placed in a hypertonic solution?
Water leaves the cells and the cells shrink.
What process permits absorption of glucose into cells
facilitated diffusion
What transport process can create a concentration gradient for sodium across the plasma membrane
active transport
In which cell stage does DNA replicate
interphase
Which of the following molecules brings the appropriate amino acid to the ribosome during protein synthesis
transfer RNA
What process does water use to move across the plasma membrane?
osmosis
What process does a cell use to make an RNA copy of a segment of DNA?
transcription
Sometimes an abnormal cell mass can develop in the human body. It can take control of the cell cycle, and cell division can malfunction. Which of the following does NOT describe all neoplasms?
cancer
Some neoplasms are benign while others are malignant. Which of the following descriptions is true for a malignant neoplasm?
may become a killer due to relentless growth
Which type of tissue is NOT readily repaired if damaged?
tissues whose mature cells are amitotic
Which of the following statements is a component of the cell theory?
A cell is the smallest living unit
What are the three main parts of a generalized cell
Plasma membrane, nucleus, and cytoplasm
Identify the best description of the arrangement of the plasma membrane phospholipid layers.
The hydrophobic parts of the phospholipids line up in the interior of the membrane and hydrophilic parts are exposed on the inner and outer surfaces of the membrane
Which represents a correct function of plasma membrane proteins?
Transport.
Rough ER
protein synthesis.
People with asthma produce too much mucus, which can block the airways. What type of cell associated with the epithelium of the respiratory tract is responsible for making mucus?
Goblet cell
hallmark feature of epithelial tissues?
have an apical surface, basement membrane, cover body surfaces both inside and outside
Groups of cells that are similar in both structure and function are known as
tissues
The specific type of epithelial tissue found lining organs of the digestive system such as the small intestine is
simple columnar
A tissue constructed of a single layer of flattened cells is known as
simple squamous epithelium
Which type of tissue is situated in the lining of the urinary bladder and urethra where stretching occurs
transitional epithelium
The type of tissue that functions to protect, support, insulate, and cushion together body tissues are classified as
connective tissues
Tendons and ligaments are classified as
dense connective (regular fibrous) tissue
connective tissue is commonly called fat
Adipose
Which of the following is not classified as a connective tissue
Skeletal muscle
The major cell type of cartilage is the
chondrocyte
What forms the hard matrix of osseous tissue (bone)?
Calcium salts
Identify the type of connective tissue that is found in lymph nodes, the spleen, and bone marrow.
reticular connective tissue
The matrix of hyaline cartilage consists of abundant collagen fibers hidden in a rubbery matrix.
True
What characteristic is shared by both cardiac and smooth muscle tissue?
involuntary contractions
The type of muscle found in the walls of hollow organs, such as the stomach, and in the walls of blood vessels is
smooth muscle
Skeletal, cardiac, and smooth muscle cells are cells that move organs and body parts.
True
Which type of tissue is insulated, supported, and protected by neuroglia?
Nervous tissue
Irritability and conductivity are the two major functional characteristics of
nervous tissue
Which of the following tissues is constructed of many collagen fibers
scar tissue
Which type of tissue is most likely to repair itself if injured?
epithelial tissue
What is the first stage to occur during tissue repair (wound healing)
inflammation
nuc
center
poly
many
hydr
water
phil
attraction or loving
phob
fear or sensitivity to something
In a cell membrane, the polar heads of phospholipids are in contact with water-based solutions, meaning they are
hydrophilic
The central organelle of a cell is called the
nucleus
Many chemical reactions, called______ synthesis reactions, occur by removing water.
dehydration
In a cell membrane, the fatty acid tails of phospholipids are hidden inside the membrane away from water, meaning they are
hydrophobic
While a dipeptide has two amino acids, a_____ has many
polypeptide
Which of these is an example of kinetic energy?
skeletal muscles contracting as a person lifts weights
Which statement best describes energy?
it does not have mass or occupy space.
All matter consists of elements. The greatest part of living matter is organized using only four elements. Which of the following elements does NOT make up the bulk of living matter?
iron
What is the number of neutrons in an atom with atomic mass of 35, three energy levels, and 7 valence electrons?
18
What subatomic particle or particles have a mass of 1, a charge of +1, and are located in the nucleus of an atom
proton
Which of these statements best describes an element?
An element is composed of identical atoms.
What is the most accurate description of C6H12O6?
C6H12O6 is a compound.
Choose the best description for the term molecule.
two or more atoms combined chemically
A compound is defined as
a molecule composed of two or more elements
If an atom has 10 electrons in its valence shell, how will it interact with atoms of a different element
It will give away 2 valence electrons to other atoms.
What is an ion
an atom that has either gained or lost electron(s
When an ionic bond forms, which part(s) of the atoms are directly involved?
the outermost electrons
How do ions form ionic bonds
Ions of opposite electrical charges are attracted to each other to balance the charges.
Calcium’s atomic number is 20. It forms ions with 18 electrons. What is the electrical charge of a calcium ion?
+2
In a covalent bond
Atoms share one or more pairs of electrons.
Covalent bonds
involve the sharing of one to three pairs of electrons.
Which of the following is true of polar covalent bonds
The electrons are shared unequally
A molecule of water (H2O) is formed by what type of bond?
polar covalent bonds
What organic molecule provides an immediate source of chemical energy within all cells?
adenosine triphosphate
Which nitrogen-containing base is found only in RNA?
uracil
What occurs when acid is added to a solution with a pH of 7?
The pH drops below 7
What is the main type of lipid found in cellular membranes
phospholipids
carbohydrates
commonly used source of energy with the ratio 1 carbon, 2 hydrogen, 1 oxygen
lipids
not soluble in water, make up the majority of cell membrane structure, concentrated source of usable energy made up of hydrocarbon chains or rings
proteins
structural and biological catalyst macromolecules of amino acids with various functions, has different levels of folding
nucleic acids
genetic information comprising a sugar-phosphate backbone and complementary base pairing. ATP is a modified version
triglycerides
at least one fatty acid chain. Fatty acid chains can be saturated with hydrogens or unsaturated, 3 fatty acids attached to one glycerol molecule
phospholipids
charged "head" region with an uncharged "tail" region, bilayer forms selectively permeable cell membrane, fats that contain phosphate groups
steroids
composed of 4 interlocking carbon rings, most physiologically important example is cholesterol, fats that are the basis for some hormones,
Guanine always pairs with
cytosine
Besides replicating before cell division, the other fundamental role of DNA is
instructions to make protein
The sugar in DNA is ________, while the sugar in RNA is ________.
deoxyribose , ribose
n DNA, adenine pairs with ________but in RNA, adenine pairs with ___________.
Thymine, uracil
ATP is a modified nucleotide used for cellular energy that contains the sugar
ribose
What is/are the product(s) of a dehydration synthesis reaction that occurs between two subunits of a polymer
Two combined monomers and a water molecule
Select the options that are examples of disaccharides
Maltose, sucrose
Select the correct statement about proteins:
A protein is denatured when it loses its shape and is no longer functional.
The most abundant lipids in the body are triglycerides, phospholipids, and steroids.
Lipids are made mostly of carbon and hydrogen with a small amount of oxygen.
Which option contains the correct base pairing for building an RNA and DNA molecule?
DNA: A-T, C-G and RNA: A-U, C-G
In which category of organic molecules would you place compounds that catalyze chemical reactions?
proteins
The pH scale is based on
hydrogen ion concentration in solution
The brain and spinal cord are surrounded by water in cerebrospinal fluid. What purpose do you think this fluid serves in protecting these organs?
Cushioning
Blood is considered a weak base. Select the pH that best represents blood
pH 7.4
Enzymes are
biological catalysts
Keratin is a protein that provide toughness to skin and forms hair and nails. Due to its role in the body, it is best classified as
a structural protein
Gastric juices produced by the stomach are strongly acidic. Without the neutralizing effect of fluids from the pancreas, the stomach acids could be absorbed directly into the blood. What would be a likely outcome for blood pH if this happened?
Blood pH would become 6.9.
Electrolytes conduct electrical currents in solution.
true
At a pH of 7, the number of hydroxide ions exceeds the number of hydrogen ions.
false
What cells of the nervous system are responsible for anchoring neurons to their blood vessels and controlling the extracellular fluid concentrations of potassium and neurotransmitters
astrocytes
What part of a neuron receives signals and sends a message to the cell body?
dendrite
What is the first event of an action potential?
Sodium gates open and the membrane depolarizes
What ion depolarizes the membrane when it diffuses into the axon of a neuron?
sodium
CVA
brain damage due to a blocked blood supply, paralysis, numbness
Alzheimer's disease
progressive brain degenration
Both Alzheimer's disease & CVA
personality change, memory loss, disorientation & confusion, short attention span, language impairment
Usually, brain injury is slight in a
concussion
In a _________, the victim may be dizzy, "see stars," or lose consciousness briefly.
Concussion
Typically, little permanent brain damage occurs in a ?
concussion
A brain ________ is the result of marked tissue destruction
contusion
In a severe case, a _________results in a coma.
contusion
Which of these parts of the brain is correctly matched with its region?
thalamus; diencephalon
Which of the following conditions would result from damage to the cerebellum?
ataxia
The blockage of cerebrospinal fluid (CSF) outflow in the brain can cause accumulation of fluid, resulting in cranial enlargement in infants. This condition is called
hydrocephalus
In flaccid paralysis, muscles atrophy because they are not receiving neural stimulation. Damage to which specific part of the spinal cord would cause flaccid paralysis
ventral root
What part of the brain do we use when initiating skeletal muscle movement
primary motor area
What produces cerebrospinal fluid (CSF)?
choroid plexus
cervical plexus
phrenic nerve, serves the diaphragm, shoulders and neck
brachial plexus
axillary and radial nerves, median & ulnar nerves, serves the thorax and upper appendages
lumbar plexus
femoral & obturator nerves, serves the lower abdomen, thighs, and hips
sacral plexus
serves the lower trunk & lower appendages, sciatic & gluteal nerves
What cranial nerve pair supplies many organs in the ventral body cavity
vagus nerves
Which of these is an effect of the parasympathetic nervous system?
increases peristalsis within the stomach and small intestines
Which of these is a sympathetic effect?
Blood vessels constrict
What could result if a spinal nerve is severely damaged?
loss of sensation and flaccid paralysis of the area served by the nerve
Which of the following can adversely affect brain development in the fetus?
alcohol
Select the supporting cells present in the peripheral nervous system.
Schwann cells, satellite cells
Select the option that correctly matches the type of neuroglia with its function
Satellite cells; surround and protect peripheral neuron cells bodies
How are neurons classified according to their function
Sensory, motor, and interneurons
What primarily determines the polarity of the cell membrane when the neuron is at rest
More potassium ions leak out of the cell than sodium ions leak into the cell
Depolarized
membrane is more positive inside than outside
central nervous system
CNS, brain and spinal cord, integrating and command centers
peripheral nervous system
PNS, Cranial and spinal nerves, communication lines with the body
dors
back
cerebr
brain
neur
nerve
itis
inflammation or disease
auto
self
The roots of the spinal cord on the posterior side are called
dorsal roots
are supporting cells of the nervous system.
neuroglia
An infection of the meninges is called
meningitis
The ________ nervous system is the part of the brain under involuntary, or automatic, control.
autonomic
The conscious part of the brain is the
cerebrum
Fibers that carry information from the skin, joints, and skeletal muscles to the central nervous system are
Both somatic and sensory
The ________ is a connective tissue wrapping around fascicles of neuron fibers.
perineurium
Which division of the peripheral nervous system activates skeletal muscles?
somatic nervous system
Saltatory conduction is a faster type of nerve impulse transmission that occurs along myelinated axons. Why is nerve impulse transmission faster in myelinated neurons?
The nerve impulse can jump from one node of Ranvier to the next, speeding the rate of nerve impulse transmission.
Ganglia are collections of
cell bodies
What are the two major functional properties of neurons
irritability and conductivity
What is the primary role of the interneuron (association neuron)
connect motor and sensory neurons in their pathways
Ms. Young feels deep pressure during a tooth extraction. Which type of sensory receptor detects this sensation?
lamellar corpuscle
Cerebrospinal fluid (CSF) does not flow through the
corpus callosum
What cells form the myelin sheaths around nerve fibers in the PNS?
Schwann cells
Which of these lists the components of a reflex arc in the correct sequence?
receptor; afferent neuron; control center; efferent neuron; effector
Why is white matter "white"
It contains a high concentration of myelin.
What is the most abundant glial cell in the central nervous system (CNS)?
astrocytes
Which of the following neurons is classified as a unipolar neuron?
sensory neuron
Which of the following neurons is classified as a unipolar neuron?
sensory neuron
The blood-brain barrier is effective against the passage of
metabolic waste such as urea
The spinal cord terminates by vertebra
L3
The primary motor area allows us to consciously move our skeletal muscles.
True
Wendy had a few alcoholic drinks, then found walking and maintaining her balance difficult. Which part of her brain was sedated by the alcohol?
cerebellum
The vital centers for the control of visceral activities such as heart rate, breathing, blood pressure, swallowing, and vomiting are located in the
medulla oblongata
A special group of neurons in the gray matter of the brain stem that plays a role in consciousness and the awake/sleep cycles is the
reticular activating system (RAS
Which meningeal layer is filled with cerebrospinal fluid (CSF)
Subarachnoid space
The hypothalamus is the "emotional-visceral" center of the brain and, thus, is an important part of the
limbic system
A stroke in the primary motor area has caused Don to lose control over his skeletal muscles on the right side of his body. What lobe of his brain was damaged?
frontal lobe
Which cranial nerve pairs are purely motor and control eye movement?
Oculomotor, trochlear, and abducens
How many pairs of spinal nerves emerge from the spinal cord
31
Which pair of cranial nerves is mismatched with its name
Cranial nerve II: oculomotor
Both the parasympathetic and sympathetic nervous systems operate with a chain of two motor neurons.
true
Which nerves dominate parasympathetic division activities?
Craniosacral nerves
In contrast to the somatic nervous system, the autonomic nervous system
has a chain of two motor neurons
The ventral rami of the spinal nerves form a complex network of nerves known as a
plexus
Myelinated fibers (tracts) form ________ matter while unmyelinated fibers form ________ matter.
white; gray
The part of the neuron that typically conducts nerve impulses away from the cell body is the
axon
Which cranial nerves control movement of the eyes
oculomotor, trochlear, and abducens