ch. 3 Flashcards
what are tissues
specialized cells and cell products that perform a limited number of functions
histology is the
study of tissues
4 types of tissues
epitheloial, connective, muscle tissue, nervous tissue
epithelial tissue does
protect, absorp, filtration, excretion, secretion, sensory
connective tissue does
support, protect, insulate, transport
muscle tissue does
movement, stabilize, regulation
nervous tissue does
transmission of electrical and chemical signals
structures in epithelial tissue
epithelia and glands
characteristics of epithelial tissue
- cellularity
- polarity
- attachment
- avascularity
- arragnement
- regeneration
Epithelial tissue cellularity
cells tightly bound, little intercellular material
Epithelial tissue polarity
apical and basal surface, uneven distribution
Epithelial tissue attachment
basal surface is attached to basal lamina
Epithelial tissue avascularity
no blood vessels
nutrients thru diffusion
Epithelial tissue arrangement
sheets/layers
Epithelial tissue regenerations
mitotically active
most delicate epithelium
simple squamous epithelium
function of simple squamous epithelium
absorpt
secrete
filtrate
reduce friction
stratified squamous epithelium provides
protection from physical and chemical attacks
stratified squamous epithelium kertatinized?!?!?
eitherrrrrrrrr
where is stratified squamous epithelium located
surface of skin, lining of facial things and ass
stratified cuboidal comminity
RARE
stratified cuboidal epithelium function
secrete and absorpt
stratified cuboidal epithelium lines
glands;ducts;tubules; thyroid
simple columnar epithelium location
lining stomach, intestine, gallbladder, uterine tubes and collecting ducts of kidneys
functions of simple columnar epithelium
protection, absorption, secretion
pseudostratified columnar epithelium located
lining of nasal cavity, trachea, and bronchi
function of pseudostratified columnar epithelium
protection and secretion
pseudostratified colunmnar epithelium appearance
positions of nuclui make it look stratified but it is all on layer
location of transitional epithelium
urinary, renal pelvis, ureters
function of transitional epithelium
expansion and recoil after stretching
holocrine secretion
the cell dies after being secreted
apocrine secretion
apical portion gets shed and then it goes through regrowth
eccrine secretion
secretory is released through exocytosis
most common type of secretion is
eccrine
type of secretion is mammary glands
apocrine
types of looose connective tissue
areolar
adipose
reticular
areolar tissue contains
fiber/cell types, ground substance
areolar tissue is widely distributed around
nerves and vessels
adipose tissue accumulates around
kidneys, eyes and hear, hypodermis, abdomen and breasts
reticular tissue forms
framework to support spleen, liver, bone marrow and free blood cells in lymph nodes
dense connective tissue types
dense reg
dense ireg
elastic
dense regular tissue forms
tendons, aponeuroses, and ligaments
dense irregular tissue is found
in dermis, joint capsules, fibrous covers around bones, nerves
elastic tissue is found
in walls of large arteries, vertebral ligaments, and walls of broncholes
3 types of cartilage
hyaline
elastic
fibrous
cartilage is between
dense ct and bone
what deposits cartilage
chondroblasts
bone is deposited by
osteoblasts
bone is deposited by
osteoblasts
3 types of muscle tissue
skeletal
cardiac
smooth