Chapter 18 Flashcards Preview

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Flashcards in Chapter 18 Deck (35):
0

What are the two largest vessels that transport blood to the right atrium.

Superior and inferior vena cava

1

What are the two largest vessels that receive blood from the left and right ventricles

Aorta and pulmonary trunks

2

Which vessels return oxygenated blood to the left atrium.

Pulmanary veins.

3

Oxygen rich blood is pumped to the entire body by the _____ ventricle

Left

4

The right side of the Herat pumps blood to what circuit

Pulmonary

5

Which cell junction acts as an anchor, holding the cells together as the heart beats

Desmosome

6

Which cell junction allows ions to move across the hear from cell to cell so that the heart beats as an entire unit

Gap junction

7

Where are the gap junctions and the desmosomes located

Intercalated disk

8

Which valve is located between the right ventricle and the pulmonary trunk

Pulmonary semilunar valve

10

Which valve is located between the left atrium and the left ventricle

Bicuspid valve

11

Which of the following is NOT a role of the pericardium?

It facilitates heart contraction.

12

The lining of the heart chambers is called the __________.

endocardium

13

The superior chambers of the heart are called the __________.

atria

14

Freshly oxygenated blood is delivered to the __________ and then it passes into the __________ to be pumped to the entire body.

left atrium; left ventricle

15

Into which chamber of the heart do the pulmonary veins deliver blood?

:

left atrium

16

right marginal artery

C. supplies blood to the lateral right side of the myocardium

17

posterior interventricular artery

. runs to the apex of the heart

18

anterior interventricular artery

supplies blood to the interventricular septum and anterior walls of both ventricles

19

circumflex artery

supplies blood to the left atrium and posterior walls of the left ventricle

20

The most muscular chamber of the heart is the __________.

left ventricle

21

tricuspid valve

valve between the right atrium and right ventricle

22

mitral valve

valve between the left atrium and left ventricle

23

aortic semilunar valve

prevents backflow of blood into the left ventricle

24

pulmonary semilunar valve

prevents backflow of blood into the right ventricle

25

Which of the following is a difference between cardiac muscle and skeletal muscle?

Unlike skeletal muscle cells, cardiac muscle cells can be autorhythmic.

26

he role of the atrioventricular node (AV node) is to __________.

slow down impulses so that the atria can contract to fill the adjacent ventricles with blood

27

The P wave of an electrocardiogram represents __________.

atrial depolarization

28

he second heart sound (the 'dup' of 'lub-dup') is caused by the __________.

closure of the semilunar valves

29

cardiac cycle

the events associated with blood flow through the heart during one complete heartbeat

30

systole

contraction

31

diastole

relaxation

32

stroke volume

the volume of blood pumped by one ventricle with each heartbeat

33

cardiac output

the amount of blood pumped by each ventricle in one minute

34

Which of the following would lead to a decrease in heart rate?

parasympathetic stimulation

35

In the fetus, blood from the left and right sides of the heart normally mix.


True