1.2 Epithelium and Glands Flashcards Preview

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Flashcards in 1.2 Epithelium and Glands Deck (23):
1

Cell junctions found on the lateral domains of the epithelial cells

Cell-to-cell adhesions/junctions

2

Main proteins in the Zonula occludens

Occludin and claudin

3

Forms a belt or tight junction surrounding the apical portion of the epithelial cell;
No space between cells
Important in organs that specialize in concentrating its content;
Materials may not pass paracellularly, only transcellularly

Tight junction / Zonula Occludens

4

Types of Anchoring junctions

Zonula adherens
Fascia adherens
Desmosome or macula adherens

5

Protein used in zonula adherens

E-cadherin

6

Electrolyte used for attachment in zonula dherens

Calcium

7

Strongest attachment between epithelial cells; Prevents sloughing off during friction; Attached to intracellular attachment plaque through intermediate filaments

Desmosome

8

Proteins in gap junctions or communication junctions

Connexions

9

Supports basal lamina and connects to the laminin through proteins

Type IV collagen

10

Core component of cilia

microtubules

11

Arrangement of microtubules in cilia

a central doublet and 9 doublets at the periphery

12

Causes the motile function of cilia

Dynein arms

13

Core component of microvilli

Actin filaments

14

Longer and more slender than cilia

Stereocilia

15

Main protein of sterocilia

Actin filament

16

Path of release through bloodstream (type of glands)

Endocrine

17

Path of release is through ducts (type of gland)

Exocrine

18

Type of gland where the target cell is adjacent

Paracrine

19

Type of gland according to mechanism of product release: Product is released through exocystosis

Merocrine

20

Type of gland according to mechanism of product release: The cell dies when the product is released

Holocrine

21

Type of gland according to mechanism of product release: Apical portion of the epithelial cells is released with the product

Apocrine

22

Specialized epithelial cell found at the basal part of the epithelium, hugging the basal cells of the acinus; has contractile elements in the cytoplasm

Myoepithelial cell

23

Major protein component of basal lamina; a protein in lace-like configuration)

Laminin