there is a division of labors in
multicellular organisms
each part has a
specific part or function
when each part of an multicellular organism does its function
it supports the overall health of the organism
organization smallest to largest
cell, tissue, organ, organ system, organism
tissue
group of similar cells that perform a specific function
organ
composed of different types of tissues
organ system
a group of organs
organism
larger more complex heirrrarrichal level of organization. has interrelated systems to help it react to stimulus, reproduce, grow, adapt, and maintain homeostasis.
cell specialization
different cells have unique structures and are specialized to carry out specific
the shapes and structures of cells differ based on
their functions
epithelial cells
arranged to close one another forming protective tissues that can be found in organisms such as the skin
cells carry on the processes that keep organisms alive -
growing, reproducing, getting rid of waste products
types of tissues found in the body
muscle tissue
nervous tissue
connective tussue
epithelial tissue
mustle tissue
made of mustle cells that can contract (shorten), allowing the body to move.
nervous tissue
directs and controls other tisses sending electrical messages
connective tussue
connects bones and provides support
epithelial tissue
covers the surfaces of your body inside and out, in lining of your digestive system, allowing for absorption of nutrients.
skeletal mustles
mustles connected to bones that provide movement. they contract and relax
contract
mustles shorten causeing a pulling action on bones
bones are
rigid and cannot bend
our skeleton bends at
joints
joints
a place in the body where two bones come together
your mustles often work in pairs by
one contracting and the other relaxing
your circulatory system includes
heart, blood, vessels
blood-
carries water, oxygen, food and waste, (such as carbondioxide)
oxygen is transported___
through your bloodstream then cells take in oxygen and trade CO2 which is then taken to your lungs to be exhaled.
your respitory system takes in____
your circulatory system delivers it____
1.) oxygen
2.)to your cells
digestive system
breaks down food into sugars, small molecules of proteins, lipids, and amino acids
nutrient
a substance that provides nourishment to the body
obsorbtion
a process that allows your body to take in nutrients.
exertory system
a network of organs that removes metabolic waste, excess water, and toxins from the body to keep internal conditions stable.
plants and animals have the same___
levels of organization
the plants shoot system is made up of ___
several organs in clouding the stem
shoot system
transports water and nutrients throughout the plant similar to the circulatory system in animals
5 major functions of skeletal system
- provides shape and supports
- enables you to move
-protects your organs
-produces blood cells
-- stores minerals and other material until you need them
how many bones
106
vertebrae-
provides support for your head and connective points for the rest of your body
your vertebrae column___
supports 11lb of your head
the bones in your body determine
your height and shape
bones are____
lightweight and strong
what does the vertebrae protect
spinal cord
the spinal cord runs
in the middle of your vertebral column
outer membrane
a thin, tough, outer most layer of the bone
compact bone
thick layer under the membrane that is hard and dense but not solid. contains minerals and blood vessels and nerves
spongy bone
layer under the compact, containing small spaces within, allowing bone to be lightweight but still strong.
marrow
red bone marrow fills the space between spongy bone and produces most of your blood cells, yellow bone marrow is in the innermost part of your bone and stores fat.
two types of joints
immovable joints
moveable joints
movable joints
can move
imovable joints
cant move only barely and only connects bones
ligaments
strong connective tissue that holds movable joints together
bones strength comes from
lightly packed phosphorous and calcium
calcium
a strong connective tissue that is more flexible than bone.