1.2 Epithelium and Glands Flashcards

1
Q

Cell junctions found on the lateral domains of the epithelial cells

A

Cell-to-cell adhesions/junctions

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2
Q

Main proteins in the Zonula occludens

A

Occludin and claudin

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3
Q

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

A

Tight junction / Zonula Occludens

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4
Q

Types of Anchoring junctions

A

Zonula adherens
Fascia adherens
Desmosome or macula adherens

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5
Q

Protein used in zonula adherens

A

E-cadherin

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6
Q

Electrolyte used for attachment in zonula dherens

A

Calcium

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7
Q

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

A

Desmosome

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8
Q

Proteins in gap junctions or communication junctions

A

Connexions

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9
Q

Supports basal lamina and connects to the laminin through proteins

A

Type IV collagen

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10
Q

Core component of cilia

A

microtubules

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11
Q

Arrangement of microtubules in cilia

A

a central doublet and 9 doublets at the periphery

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12
Q

Causes the motile function of cilia

A

Dynein arms

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13
Q

Core component of microvilli

A

Actin filaments

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14
Q

Longer and more slender than cilia

A

Stereocilia

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15
Q

Main protein of sterocilia

A

Actin filament

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16
Q

Path of release through bloodstream (type of glands)

A

Endocrine

17
Q

Path of release is through ducts (type of gland)

A

Exocrine

18
Q

Type of gland where the target cell is adjacent

A

Paracrine

19
Q

Type of gland according to mechanism of product release:

Product is released through exocystosis

A

Merocrine

20
Q

Type of gland according to mechanism of product release:

The cell dies when the product is released

A

Holocrine

21
Q

Type of gland according to mechanism of product release:

Apical portion of the epithelial cells is released with the product

A

Apocrine

22
Q

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

A

Myoepithelial cell

23
Q

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

A

Laminin