6.2 lab - muscle tissue Flashcards Preview

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Flashcards in 6.2 lab - muscle tissue Deck (15)
1

T/F in the muscularis externa, the inner smooth muscle layer is always circular and the outer smooth muscle layer is always longitudinal

true
(with respect to lumen, but either can be transversely or longitudinally cut, careful)

2

how will muscularis externa appear in a 45 degree oblique cut?

inner circular and outer longitudinal layers will be largely indistiguishable

3

a stretched skeletal muscle fiber will have wider __ bands and a (lighter or darker?) appearance

wider I bands
wider H bands
lighter appearance

4

T/F there are capillaries in the endomysium

true
smaller than the ones in perimysium

5

3 layers of heart wall

epicardium
myocardium
endocardium

6

epicardum

outer protective connective tissue layer of heart
-adipose tissue and nerve fibers separate it from myocardium

7

endocardium

endothelial lining of heart wall
- connective tissue layer with perhaps some adipose tissue separates from myocardium

8

myocardium

bulk of heart wall
-cardiac myocytes
-contractile layer of heart wall

9

contractile layer of heart wall

myocardium

10

the thickest layer of the heart wall is __

myocardium

11

outer protective connective tissue layer of heart

epicardium

12

endothelial lining of heart wall

endocardium

13

the simple squamous epithelium of the inner heart wall is called __

endocardium
(more specific than endothelium)

14

the epicardium and endocardium are separated from the myocardium by...

epicardium - adipose and some nerve tissue
endocardium - connective and some adipose tissue

15

of epicardium, myocardium, and endocardium, which has blood vessels?

i think all of them?