Epithelial tissues definition?
covers body and organs, lines cavities, secretory portions of glands
ex: lining of airway, mouth, uterus
Connective tissues definition?
the most abundant, supports protect and connect
muscle tissues definition?
contraction, movement
Nerve tissues definition?
make and connect nerve impulses, rapid coordination and control
epithelial tissue characteristics?
pack cells, has basement membranes, no blood vessels, no nerve, has great regeneration
epithelial tissue classification?
Number of cell layers, and shape of the cell
simple epithelial is
one cell layer
stratified is?
more than one cell layer
squamous is?
flat cell
cuboidal is?
cube shape?
columnar is?
column
transitional is?
irregular cell
the function of simple squamous epithelial?
one layer of flat cell; diffusion and filtration
the function of stratified squamous?
more than one layer of flat cells; protection, the skin
simple columnar and simple cuboidal function?
secretion and absorbtion
stratified function ?
protection
transitional characteristics?
always more than one layer, stretchable, urinary bladder
connective tissue characteristics?
a few cells, fibers, acellular substances called matrix
collagen fibers ->
strength
elastic fibers ->
elasticity
reticular fibers ->
branched collagen, support
fibroblasts ->
fiber making cells
acellular substance characteristic?
no cell, chemicals, contains proteins, matrix is used for classification
connective with solid and hard matrix is called?
bone
connective tissue with semisolid matrix is called ?
cartilage
connective tissue with a liquid matrix is called?
blood
connective tissue proper is?
simple, connection
areolar connective tissue is ?
big and jelly matrix, air bubbles, WBC's
adipose tissue is?
Fat
fibrous connective tissue
1. Regular: tendons and ligaments
2. Irregular : skin
fibrose regular tissue->
connect bone to bone
temdons and ligaments belong to what type of tissue?
fibrous connective tissue
fibrose irregular connective tissue is?
skin
elastic connective tissue are?
elastic fibers, elasticity, lungs
specialized connective tissue is?
bones, blood, cartilage, blood
hyaline cartilage is?
the abundant cartilage
elastic cartilage is?
elastic fiber, elasticity, ear, epiglottis
fibrocartilage is?
collagen fibers, strength, discs between vertebrae
muscle tissues are?
skeletal muscle, cardiac muscles, and smooth muscles
skeletal muscle characteristics?
attached to bones, voluntary, striation, long fibers, parallel with peripherally located multiple nuclei.
cardiac muscles characteristics ?
heart, involuntary, striation, fibers are branched with one nucleus ; intercalated disks
smooth muscles characteristics?
wall of the hollow organs, no striation, involuntary, each fiber has one nucleus
Nerve tissue includes the ?
brain, spinal cord, nerve
neurons ->
main cells, make and conduct nerve impuse
neuroglial cells ->
supporting cells
Integumentary system includes?
skin, nails, hair, sweat glands, oil glands
fucntion of integumentary system
protection, vitamin D production, temperature adjustment, excretion: releasing oil and sweat, absorption: fat soluble substances
the first layer of skin?
epidermis
second layer of skin?
Dermis
the third layer of skin?
hypodermis
epidermis is ?
the top layer of the skin
what type of tissue is the epidermis?
stratified squamous epithelial
function of the epidermis?
protect against microorganisms
stratum basale and stratum germinativum has ?
the ability of mitosis
stratum Lucidum is?
clear layer, pals, and sole of feet
stratum corneum is?
dead cells, slough off, protect us against infection, cells are filled with karatin
Dermis is?
middle layer, which contains all skin appendages, thick
what type pf tissue is the dermis made up of?
fibrous connective tissue; has collagen and elastic fibers
function of dermis?
has blood vessels and nerves, and is responsible for strength and elasticity of the skin
hypodermis is?
the deepest layer of the skin, aka Subcutaneous fatty tissue, fat, and fibers and big blood vessels and nerves
function of hypodermis?
connects skin to underlying muscles
Keratin characteristics?
protein, makes skin waterproof, makes skin resistant to abrasion, released by keratinocytes
keratin is found in the?
epidermis
Melanin is what color?
brown, black pigments
melanin comes from?
melanin making cells
function of melanin?
absorbs UV rays of sunlight
Carotene is what color?
yellowish
hemoglobin is?
red, inside of Red blood cells
function of hemoglobin?
O2 transportation
Hair is?
dead epidermal cells
Hair shaft is?
visible part of hair
hair roots is?
invisible part of hair, located in hair follicle
hair follicles is?
inward tube enclosed hair root
arrector pili muscle is?
goose bumps
nails is?
dead epidermal cells built with keratin, gets hard and flat.
nail body is?
the visible part of the nail
nail root is?
invisible part of the nail
the nail bed is?
connect tissue underneath of the nails, Pink, Bluish: Cyanosis ( lack of O2)
cuticle is?
Fold separates skin and nail
oil glands are?
sebaceous glands; makes skin oil aka sebum
Sebacious gland opens into the?
hair follicles
function of skin oil, sebum?
the lubricant of skin and hair makes the skin soft and pliable, kills bacteria
sweat glands aka sudoriferous gland
->
...
Eccrine sweat glands are?
small numerous, everywhere except the armpits and genitals, secretion is watery, clear, water, salt, wastes
eccrine gland works with?
heat, heat stimulates them
appocrine sweat glands are?
large, small number, located in armpits and genitals
secretion of appocrine glands are?
white, milky, protien
What hormones relate with the apocrine gland?
Sex hormones, and stress hormones