Lecture Test 2

Front 1

The heart lies in the

Back 1

mediastinum

Front 2

The left ventricle pumps blood

Back 2

to the systemic circuit

Front 3

The atrioventricular valve that is located on the side of the heart that receives the superior vena cava is the:

Back 3

tricuspid valve

Front 4

The bicuspid or mitral valve is located:

Back 4

between the left atrium and left ventricle

Front 5

Compared to the right ventricle, the left ventricle

Back 5

has a thicker wall


is round in cross section


produces 6 to 7 times more force when it contracts


develops large pressures when it contracts

Front 6

The first blood vessels to branch from the aorta are the

Back 6

coronary arteries

Front 7

The following are various components of the conducting system of the heart

Back 7

1

Front 8

The first heart sound is heard when

Back 8

1

Front 9

Depolarization of the ventricles is represented on an electrocardiogram by the

Back 9

1

Front 10

When a clot forms on the plaque in a coronary vessel obstructing blood flow to the muscle, the condition is referred to as a (n)

Back 10

1

Front 11

Depolarization of the ventricles is represented on an electrocardiogram by the

Back 11

1

Front 12

When a clot forms on the plaque in a coronary vessel obstructing blood flow to the muscle, the condition is referred to as a (n)

Back 12

1

Front 13

Abnormally slow conduction through the ventricles would change the shape of the _____ in an ECG tracing

Back 13

1

Front 14

If the connection between the SA node and AV node becomes blocked,

Back 14

1

Front 15

If there is a blockage between the AV node and the AV bundle, how will this affect the appearance of the electrocardiogram?

Back 15

1

Front 16

Compared to arteries, veins

Back 16

1

Front 17

The blood vessels that play the most important role in the regulation of blood flow to a tissue and blood pressure are the

Back 17

1

Front 18

The only blood vessels whose walls permit exchange between the blood and the surrounding interstitial fluids are the

Back 18

1

Front 19

Materials and water can move across capillary walls by

Back 19

1

Front 20

Blood moves forward through veins

Back 20

1

Front 21

The two vertebral arteries going to the brain fuse to form a large artery, the

Back 21

1

Front 22

The internal carotids and the basilar artery are interconnected by an anastomosis called the _______ for the brain to receive blood.

Back 22

1

Front 23

The ____ divides the aorta into a (superior) thoracic aorta and an (inferior) abdominal aorta.

Back 23

1

Front 24

Near the level of vertebra L4, the aorta branches to form the

Back 24

1

Front 25

The vessel that receives blood from the head, neck, chest, shoulders, and arms is the

Back 25

1

Front 26

Nutrients from the digestive tract enter the_____ then into the liver

Back 26

1

Front 27

Blood pressure is determined by

Back 27

1

Front 28

Blood pressure increases with

Back 28

1

Front 29

Blood flow through the circulatory system is affected by

Back 29

1

Front 30

As blood travels from the aorta toward the capillaries

Back 30

1

Front 31

The difference between the systolic and diastolic pressures is called the

Back 31

1

Front 32

Each of the following factors would increase or elevate cardiac output except one. Identify the exception

Back 32

1

Front 33

Anxiety can result in

Back 33

1

Front 34

Elderly individuals usually have

Back 34

1

Front 35

Factors that increase the risk of atherosclerosis include

Back 35

1

Front 36

Each of the following factors would increase peripheral resistance except one. Identify the exception

Back 36

1

Front 37

Which of the following is faster?

Back 37

blood flow along the walls of a blood vessel


blood flow in the center of a large vessel

Front 38

Edema would be likely to form when

Back 38

1

Front 39

The layer of the heart wall that is composed primarily or cardiac muscle tissue is the

Back 39

1

Front 40

The greatest blood pressure is experienced in the

Back 40

1

Front 41

The rapid depolarization of the heart muscle is due to a rapid increase in permeability of the membrane to

Back 41

1

Front 42

The impulse is passing through the AV node

Back 42

1

Front 43

The heart chamber having the greatest work load is

Back 43

1

Front 44

Which of the following ECG waves represents ventricular repolarization?

Back 44

1

Front 45

The electrocardiogram is most useful in determining which component of cardiac output?

Back 45

1

Front 46

If stroke volume is 80 ml and the heart rate is 70 beats per minute, the cardiac output is

Back 46

1

Front 47

According to the Frank-Starling law of the heart states that

Back 47

1

Front 48

According to the Frank-Starling law of the heart,

Back 48

1

Front 49

Which of the following will not increase heart rate

Back 49

1

Front 50

Blood flow resistance

Back 50

1

Front 51

The pulse pressure

Back 51

1

Front 52

Which of the following is not a characteristic of capillaries

Back 52

1

Front 53

Through which vessel is the velocity of blood flow the slowest

Back 53

1

Front 54

The principle force that causes movement of fluid from the tissues into the capillaries to help maintain blood volume

Back 54

1

Front 55

Which vessels can act as a blood reservoir by adjusting their total capacity to accommodate variation in blood volume?

Back 55

1

Front 56

Which of the following factors aids venous return to the heart

Back 56

1

Front 57

The cardiovascular control center in the brain for regulation of systemic blood pressure is located in the

Back 57

1

Front 58

_________ refers to an abnormally high, chronic state of increased arterial blood pressure

Back 58

1

Front 59

A small vessel connecting the pulmonary trunk with the aorta and bypassing the fetal lungs is the

Back 59

1

Front 60

The lymphatic system

Back 60

1

Front 61

Anatomically, lumph vessels resemble

Back 61

1

Front 62

Most of the lymph returns to the venous circulation by way of the

Back 62

1

Front 63

The lymphatic system differs from the circulatory system in that it

Back 63

1

Front 64

The lymphatic system encompasses a variety of structures (tissues ans organs) which are

Back 64

1