Histo Flashcards

1
Q

The CNS and PNS are derived from what types of ectoderm?

A
CNS = NT
PNS = neural crest
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2
Q

What is the major a.a. in collagen?

A

glycine

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3
Q

What makes elastic fibers different from collagen?

A

elastic does not have hydrolysine

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4
Q

fibrocartilage have a large number of what cellular organelle?

A

RER

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5
Q

Which CT proper is not from type I collagen?

A

Reticular (type III)

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6
Q

Most to least abundant leukocytes:

A
neutrophils
lymphocytes 
eosinophils
monocytes
basophils
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7
Q

Where is there non-keratinized mucosal epithelium?

A

mouth
esophagus
vagina
distal urethra

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8
Q

What is the main cell in CT?

A

fibroblasts

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9
Q

What type of cells make up granulation tissue?

A

angioblasts

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10
Q

What cells have phagocytic properties?

A

monocytes
macrophages
neutrophils
eosinophils

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11
Q

What type of epithelium is salivary glands?

A

stratified columnar

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12
Q

What type of epithelium is pharynx, epiglottis, anus?

A

stratified columnar

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13
Q

Primary type of oral epithelium?

A

stratified squamous: esophagus, mouth, gingiva, oropharynx, laryngopharynx

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14
Q

Olgiodendrocyte fxn

A

myelination

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15
Q

Microglia fxn

A

phagocytosis

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16
Q

Ependymal cell fxn

A

ventricles, spinal cord

17
Q

choroidal cell fxn

A

CSF secretion

18
Q

Eccrine sweat gland classification

A

cholinergic (PNS)

19
Q

Apocrine sweat gland classification

A

pheromones (SNS)

20
Q

zona occuludens

A

tight junctions

21
Q

zona adherenes

A

intermediate junctions

22
Q

macula adherens

A

desmosomes

23
Q

What makes up the hypodermics?

A

loose CT and adipose tissue

24
Q

What type of tissue is the dermis?

A

dense irregular CT

25
Q

What structures can be found in the lamina densa

A
type IV collagen
PG 
laminin 
fibronectin 
anchoring fibrils (VII)
26
Q

What are the 3 layers of the basement membrane

A

lamina lucida
lamina densa
reticular lamina (III)

27
Q

Layers of skin (superficial to deep)

A
corneum 
lucidum 
granulosum 
spinosum 
basale
28
Q

what layer has pyknotic keratinized cells

A

stratum corneum

29
Q

what layer is only present in thick sin

A

stratum lucidum

30
Q

what layer is keratohylain in?

A

granulosm

31
Q

which skin layer is the mitotic layer?

A

basale

32
Q

Free n ending fxn

A

pain and temp

in stratum granulosm

33
Q

Ruiffini corpsucle fxn

A

mechanoreceptors (stretch)

34
Q

Pacinian corpuscle fxn

A

pressure

35
Q

What wraps around entire m?

A

epimysium

36
Q

What wraps m fasicles?

A

perimysium

37
Q

fibers in m. spindle that detect change in length

A

1A (fast, adaptive)

II (slow, non adaptive)

38
Q

type IB m. fibers

A

GTO

change in tension