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Histology > Epithelium and Glands (PPT based) Part II > Flashcards

Epithelium and Glands (PPT based) Part II Flashcards

1
Q

Nexus or communicating junctions

A

GAP JUNCTION

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2
Q

Couple adjacent cells metabolically and electrically

A

GAP JUNCTION

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3
Q

Common in certain tissues like CNS, cardiac and smooth muscles

A

GAP JUNCTION

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4
Q

Gap junction is composed of a channel-forming proteins (connexins) that assemble to form _______

A

connexons

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5
Q

Extracellular supporting structure

A

BASAL LAMINA

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6
Q

Produce by epithelium

A

BASAL LAMINA

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7
Q

Composed of type IV collagen, laminin, entacin, proteoglycans (mostly heparin sulfate)

A

BASAL LAMINA

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8
Q

Located at the boundary between epithelial cells and the underlying connective tissue

A

BASAL LAMINA

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9
Q

Specialized junctions that resemble ½ of the macula adherens

A

HEMIDESMOSOMES

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10
Q

Mediate adhesion of basal cell membrane to basal lamina

A

HEMIDESMOSOMES

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11
Q

Integrins on one side is attached to the plaque with keratin tonofilaments and on the other side attaches to laminin and collagen IV of BL

A

HEMIDESMOSOMES

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12
Q

Finger-like enfoldings functions to increase the surface area available for transport

A

BASAL PLASMA-MEMBRANE ENFOLDINGS

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13
Q

Common in ion-transporting epithelia

A

BASAL PLASMA-MEMBRANE ENFOLDINGS

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14
Q

Examples of basal plasma-membrane enfoldings:

A

Distal convoluted tubules, ducts in salivary glands

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15
Q

Compartmentalize mitochondria

A

BASAL PLASMA-MEMBRANE ENFOLDINGS

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16
Q

Function to bring ion pumps close to their energy supply (mitochondria)

A

BASAL PLASMA-MEMBRANE ENFOLDINGS

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17
Q

CLASSIFICATION OF EPITHELIA:
based on cell layer

A

Simple (one layer)
Stratified (more than one cell layer)

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18
Q

Classification of epithelia:
Based on cell morphology

A

Squamous
Cuboidal
Columnar

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19
Q

Other classification of epithelia:

A

Pseudostratified
Transitional

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20
Q

Shape of surface cells: flattened

A

SIMPLE SQUAMOUS

21
Q

Sample locations: pulmonary alveoli, loop of Henle, parietal layer of Bowman’s capsule, inner and middle ears, blood and lymphatic vessels, pleural and peritoneal cavities

A

SIMPLE SQUAMOUS

22
Q

Shape of surface cells: cuboidal

A

SIMPLE CUBOIDAL

23
Q

Locations: ducts of many glands, covering of ovary, form kidney tubules

A

SIMPLE CUBOIDAL

24
Q

Shape of surface cells: columnar

A

SIMPLE COLUMNAR

25
Q

Locations: lining of oviducts, ductuli efferentes of testis, uterus, small bronchi, much of digestive tract, gallbladder, large ducts of some gland, Digestive tubes (STOMACH)

A

SIMPLE COLUMNAR

26
Q

striated border; narrow finger-like cytoplasmic process

A

Microvilli

27
Q

hair-like structure seen in uterus, oviducts, ductuli efferentes and small bronchi

A

Cilia

28
Q

Shape of surface cells: all cells rest on basal lamina but not all reach epithelial surface; surface cells are columnar

A

PSEUDOSTRATIFIED

29
Q

Locations: lining of most of trachea, primary bronchi, epididymis and ductus deferens, auditory tube, tympanic cavity, nasal cavity, lacrimal sac, male urethra, large excretory ducts

A

PSEUDOSTRATIFIED

30
Q

Most type of pseudostratified columnar epithelium is ______ seen on the apical surface of the cells that reach the epithelial surface

A

ciliated

31
Q

Shape of surface cells: flattened with nuclei

A

STRATIFIED SQUAMOUS, NONKERATINIZED

32
Q

Locations: lining of mouth, epiglottis, esophagus, vocal folds, vagina

A

STRATIFIED SQUAMOUS, NONKERATINIZED

33
Q

Shape of surface cells: flattened without nuclei

A

STRATIFIED SQUAMOUS, KERATINIZED

34
Q

Locations: epidermis of skin

A

STRATIFIED SQUAMOUS, KERATINIZED

35
Q

Shape of surface cells: cuboidal
Locations: ducts of sweat glands, Seminiferous tubules of Testes

A

STRATIFIED CUBOIDAL

36
Q

Shape of surface cells: columnar

Locations: conjunctiva of eye, some large excretory ducts, portions of male urethra

A

STRATIFIED COLUMNAR

37
Q

Shape of surface cells: dome-shaped (relaxed) flattened (distended)

Locations: lining of urinary tract from renal calyces to urethra

A

TRANSITIONAL

38
Q

Specialized as organ of secretion or excretion

A

GLANDS

39
Q

Formed when epithelial tissues grow down into the underlying connective tissue

A

GLANDS

40
Q

ACCORDING TO SITE OF SECRETION:

Secrete into a duct or onto a surface

A

Exocrine

41
Q

ACCORDING TO SITE OF SECRETION:

Most glands are of this type

A

Exocrine

42
Q

ACCORDING TO SITE OF SECRETION:

Ductless; secrete into the blood

A

Endocrine

43
Q

ACCORDING TO SITE OF SECRETION:

Examples are Thyroid gland, pituitary gland, testes, parathyroid, adrenal

A

Endocrine

44
Q

ACCORDING TO MORPHOLOGY (based on duct branching):

Crypts of Lieberkuhn

A

Simple straight tubular

45
Q

ACCORDING TO MORPHOLOGY (based on duct branching):

Sweat glands

A

Simple coiled tubular

46
Q

ACCORDING TO MORPHOLOGY (based on duct branching):

Gastric glands, uterine glands

A

Simple branched tubular

47
Q

ACCORDING TO MORPHOLOGY (based on duct branching):

Tarsal glands

A

Simple branched alveolar

48
Q

ACCORDING TO MORPHOLOGY (based on duct branching):

Sebaceous gland

A

simple branched saccular

Histology (37 decks)

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