Epithelium & Integument Flashcards Preview

HDM > Epithelium & Integument > Flashcards

Flashcards in Epithelium & Integument Deck (13):
1

Microvilli

also called brush borders main function is to increase surface area tissue

2

Cilia

-mobile hair-like projections

-an extension of the cytoskeleton function:

coordinated movement movement of cilia causes current to wash away particles, junk, etc (respiratory tract)

3

Stereocilia

very long (longer than microvilli)

non-motile microvilli rigid due to actin filaments function: secretion and absorption

found: epididymis and inner ear

4

Flagella

movement based using tail one per cell sperm

5

Zonula Occludens (Tight Junctions)

stop transport from apical or lateral domains

prevent water soluble elements from passing through

6

Zonula Adherens (Adhering Junctions)

mainly involved in anchoring cells together

beneath tight junctions

plaques of myosin, tropomyosin, and vinculin

7

Macula Adherens (Desmosomes)

has plaques on opposing membranes

cytokeratin filaments present for shearing forces

cell adhesion is mediated by desmoglein

8

Gap Junctions (Connexons)

mediate intercellular communication by allowing rapid spread of information

9

Basement Membrane

basal lamina and reticular lamina

10

Basal Lamina/surface

important in orienting the cell cell to cell interactions selective barrier

11

Basal Lamina Components

Lamina Lucida: extracellular glycoproteins

Lamina Densa: meshwork of collagen fibrils (IV)

12

Reticular Lamina

Produced by fibroblasts made of type I and III collagen

13

Simple squamous epithelium

A image thumb