epithelial tissue histo Flashcards Preview

► Med Misc 05 > epithelial tissue histo > Flashcards

Flashcards in epithelial tissue histo Deck (23):
1

function of epithelial tissue in skin

protection

2

function of epithelial tissue in intestine

absorption

3

function of epithelial tissue in glandular epithelium

secretion

4

function of epithelial tissue in kidney

excretion

5

function of epithelial tissue in ovary

reproduction

6

function of neuroepitheloum

sensation

7

function of goblet cell

lubrication

8

function of myoepithelial cell

contraction

9

general characteristics of epithelial tissue


CELLULAR
AVASCULAR
FORMS MEMBRANES or GLANDS
ASSOCIATED WITH A BASEMENT MEMBRANE AND LAMINA/TUNICA PROPRIA

10

Surface specializations (4)

cilia, keratin, goblet cell, brush border

11

JUNCTIONAL COMPLEX
-prevents flow of matls bet epith cells

ZO

12

JUNCTIONAL COMPLEX
-actin filaments into electron-dense plaques; from terminal web

ZA

13

JUNCTIONAL COMPLEX
hairpin loops; cadherins

Desmosome/Macula adherens-

14

JUNCTIONAL COMPLEX
integrins, laminin, collagen type IV

Hemidesmosome-

15

function of Pseudostratified columnar epith w/ goblet cells & cilia (trachea, bronchi

cleanse the inspired air & transport mucus & particulate matter to the oral cavity for expulsion

16

function of Simple columnar epith w/ cilia (fallopian tubes, efferent ductules of the testes) -

conduct oocyte & sperm

17

function Pseudostratified columnar epith w/ stereocilia (epididymis, vas deferens) -

absorb fluid

18

part of simple squamous epithelium reduces friction by producing lubricating fluids;
transports fluids

mesothelium

19

part of simple squamous epithelium for passive transport of fluids, nutrients, & metabolites

ENDOTHELIUM-

20

SIMPLE CUBOIDAL EPITHELIUM w/ BRUSH BORDERS or MICROVILLI functions (2)

Absorption of nutrient materials & fluids from the filtrate that passes through the tubules
Responsive to the ADH & control resorption of water from the glomerular filtrate, thus, affect urine density, & help retain water content of the body

21

FUNCTIONAL CORRELATIONS of transitional epithelium


Allows distensibility of urinary organs (calyces, pelvis, ureters, & urinary bladder) without breaking the cell contacts
Forms a protective osmotic barrier between urine in the u.bladder & underlying tissue fluids

22

functional correlations of STRATIFIED SQUAMOUS EPITHELIUM

For protection of surfaces due to its multi-layered cellular composition
Keratin layer (skin) - additional protection from abrasion, dessication, & bacterial invasion

23

TYPES of MEMBRANES


CUTANEOUS – skin
SEROUS – pleura, pericardium, peritoneum
MUCUS – GIT, respiratory tract
SYNOVIAL – bursae of tendon sheaths

Decks in ► Med Misc 05 Class (295):