Chapter 20 - Cardiovascular System - Heart Notes Flashcards Preview

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Flashcards in Chapter 20 - Cardiovascular System - Heart Notes Deck (199)
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1

adult heart is the shape of a

blunt cone

2

average size of adult heart

closed fist

3

blunt rounded point of the cone

apex

4

flt larger portion of the cone

base

5

heart is located

thoracic cavity

6

heart is located between the ________ in a midline partition called the _______

lungs
mediastinum

7

what forms the mediastinum

heart
esophagus
trachea
associated structures

8

heart lies in a _______ position

oblique

9

the apex of the heart is directed to the

left

10

approximately _____ of the heart's mass lies left of the midline of the sternum

2/3

11

heart consists of ______ chambers

4

12

what are the chambers of the heart

two atria
two ventricles

13

the heart is surrounded by a double-layered closed sac called the _________ or _________

pericardium
pericardial sac

14

the pericardium consists of ______ outer layer

tough fibrous connective tissue

15

name of the outer layer of pericardium

fibrous pericardium

16

pericardium has a ________ inner layer

simple squamous epithlium

17

name of the inner layer of pericardium

serous pericardium

18

function of the fibrous pericardium

help hold the heart in place

19

function of the serous pericardium

reduce friction as the heart beats

20

the ________ lines the fibrous pericardium

parietal pericardium

21

the ________ lines the exterior surface of the heart

visceral pericardium

22

_______ is contained in the pericardial cavity between the parietal and visceral pericardium

pericardial fluid

23

_______ is inflammation of the serous pericardium

pericarditis

24

cause of pericarditis

infection

25

what mimics a myocardial infarction

pericarditis

26

heart attack

myocardial infarction

27

_______ is an accumulation of fluid in the pericardial sac. when the heart is in its relaxation plase the fluid compresses the heart muscle and it cannot fill with blood to send to the body

cardiac tamponade

28

the heart wall has _______ layers

3

29

3 layers of heart wall

outer epicardium
middle myocardium
inner endocardium

30

other name of outer epicardium

visceral pericardium