Chapter 18

Question 0

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

Answer 0

Aorta and pulmonary trunks

Question 1

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

Answer 1

Superior and inferior vena cava

Question 2

Which vessels return oxygenated blood to the left atrium.

Answer 2

Pulmanary veins.

Question 3

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

Answer 3

Left

Question 4

The right side of the Herat pumps blood to what circuit

Answer 4

Pulmonary

Question 5

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

Answer 5

Desmosome

Question 6

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

Answer 6

Gap junction

Question 7

Where are the gap junctions and the desmosomes located

Answer 7

Intercalated disk

Question 8

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

Answer 8

Pulmonary semilunar valve

Question 10

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

Answer 10

Bicuspid valve

Question 11

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

Answer 11

It facilitates heart contraction.

Question 12

The lining of the heart chambers is called the __________.

Answer 12

endocardium

Question 13

The superior chambers of the heart are called the __________.

Answer 13

atria

Question 14

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

Answer 14

left atrium; left ventricle

Question 15

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

Answer 15

:

left atrium

Question 16

right marginal artery

Answer 16

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

Question 17

posterior interventricular artery

Answer 17

. runs to the apex of the heart

Question 18

anterior interventricular artery

Answer 18

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

Question 19

circumflex artery

Answer 19

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

Question 20

The most muscular chamber of the heart is the __________.

Answer 20

left ventricle

Question 21

tricuspid valve

Answer 21

valve between the right atrium and right ventricle

Question 22

mitral valve

Answer 22

valve between the left atrium and left ventricle

Question 23

aortic semilunar valve

Answer 23

prevents backflow of blood into the left ventricle

Question 24

pulmonary semilunar valve

Answer 24

prevents backflow of blood into the right ventricle

Question 25

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

Answer 25

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

Question 26

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

Answer 26

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

Question 27

The P wave of an electrocardiogram represents __________.

Answer 27

atrial depolarization

Question 28

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

Answer 28

closure of the semilunar valves

Question 29

cardiac cycle

Answer 29

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

Question 30

systole

Answer 30

contraction

Question 31

diastole

Answer 31

relaxation

Question 32

stroke volume

Answer 32

the volume of blood pumped by one ventricle with each heartbeat

Question 33

cardiac output

Answer 33

the amount of blood pumped by each ventricle in one minute

Question 34

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

Answer 34

parasympathetic stimulation

Question 35

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

Answer 35

True