Chapter 4 Part I Flashcards Preview

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Flashcards in Chapter 4 Part I Deck (58)
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1

endothelium of ENDOCARDIUM layer of heart is made of ______

simple squamous

2

looser CT layer of ENDOCARDIUM layer of heart is made of ______

fibroelastic CT

3

denser CT layer of ENDOCARDIUM layer of heart is made of ______

more collagen I and elastic fibers
some smooth muscle

4

subendocardial layer of ENDOCARDIUM of heart is made of _______

looser CT with blood vessels, and nerves

5

______ are modified cardiac myocytes; contain stored ______ ; and are attached using ____ & _____

purkinje fibers
glycogen
gap junctions
macula adherens

6

atria of myocardium is ____ muscle and more _____ fibers

less muscle
more elastic

7

ventricle of myocardium is ______ muscle layer

well-developed

8

TRANSVERSE portion of intercalated discs are made of ______ & ______

macula adherens
fascia adherens

9

LONGITUDINAL portion of intercalated discs are made of ______

large gap junctions

10

fxns of intercalated discs are:
1 attach cardiac myocytes in a row using _____ & _____
2 attach and stabilize myofibrils using _______
3 cell to cell communication using ______

macula adherens & gap junctions
fascia adherens
gap junctions

11

_______ will INCREASE HR and INCREASE CONTRACTION FORCE

sympathetics

12

______ will SLOW HR and DECREASE CONTRACTION FORCE

parasympathetics

13

specialized cardiac muscle cells are called

myoendocrine cells

14

____ function in:
1 fluid and electrolyte balance so target the KIDNEYS
2 DECREASE BP so target small arteries and arterioles

hormones

15

epicardium of pericardium is made of _____

visceral pericardium

16

sub-epicardial layer of fibroblastic CT (in pericardium) containing:

coronary vessels
nerves
sometimes- much adipose

17

layer of pericardium that secretes a serous lubricating fluid

mesothelium

18

layer of pericardium that includes:
mesothelium
layer of fibroelastic CT

parietal pericardium

19

pericardial sac is made of _____ & ______

parietal pericardium
fibrous pericardium (collagen I)

20

pericardial cavity holds _____ ml of fluid btwn _____ & ______

15-50 ml
visceral pericardium
parietal pericardium

21

cardiac skeleton is made of _____ CT and the 3 main components are: ___ , ____ & _____

dense irregular CT
annuli fibrosi
trigonum fibrosum
septum membranaceum

22

around base of aorta, pulmonary artery and the openings to the chambers

annuli fibrosi

23

_____ is by cusps of aortic valve

trigonum fibrosum

24

upper portion of interventicular septum that functions as the ORGIN AND INSERTION for some cardiac myocytes

septum membranaceum

25

______ CT has many collagen I and elastic fibers and is almost AVASCULAR

dense irregular CT

26

additional component of interventicular septum that are tendon-like and made of DENSE REGULAR CT

chordae tendinae

27

____ generally isolates atrial and ventricular myocardial to ensure individual chamber contractions

cardiac skeleton

28

chest pain usually brought out by exertion

angina

29

slow progressive narrowing of coronary vessels therefore, less oxygen is the cause of : _____

angina

30

abnormal heart rhythms

dysrhythmia