Heart worksheet

Question 1

______________is the double layered closed sac that surround the heart, prevents over distention of the heart and anchors it in the mediastinum

Answer 1

Pericardium

Question 2

______________is the fluid that fills the pericardial cavity

Answer 2

Pericardial Fluid

Question 3

____________________is the thick middle layer of the heart, composed of cardiac muscle cells

Answer 3

Myocardium

Question 4

_____________smooth inner surface of the heart

Answer 4

Endocardium

Question 5

_______________the vein that drains the lower part of the body into the right atrium

Answer 5

Inferior Vena Cava

Question 6

_____________valve between the right atrium and right ventricle

Answer 6

Tricuspid

Question 7

____________wall separating the two ventricles

Answer 7

Ventricular Septum

Question 8

______________cardiac muscle cells that generate spontaneous action potentials with the greates frequency; the pacemaker

Answer 8

SA Node

Question 9

___________time during which a cardiac muscle cell is completely insensitive to further stimulation

Answer 9

Absolute Refactory Period

Question 10

_____________total amoun of blood pumped per minute

Answer 10

1.3 Gallons or 5 Liters

Question 11

_____________force responsible for blood movement in the vessels

Answer 11

Blood Pressure

Question 12

___________the sound asscoiated with the semilunar valves closing

Answer 12

dub

Question 13

The papillary muscles are attached to the

Answer 13

Chordae Tendinae

Question 14

Electrical impulses are conducted from one cardiac muscle cell to another because of

Answer 14

Gap Junctions

Question 15

During the transmission of action potentials through the conducting system of the heart, there is a temporary delay of transmission at the:

Answer 15

AV Node

Question 16

Stroke Volume is the amount of blood:

Answer 16

pumped by the heart per minute

Question 17

The base of the heart is located:

Answer 17

Behind the 2nd Rib

Question 18

The visceral pericardium is also known as the:

Answer 18

Epicardium

Question 19

Purkinje fibers are located in the:

Answer 19

Endocardium

Question 20

A recording of the electrical changes that occur in the myocardium during the cardiac cycle is an:

Answer 20

Electrocardiogram (ECG)

Question 21

The heart is located in the thoracic cavity:

a. anterior to the sternum and anterior to the vertebrae
b. inferior to the diaphragm and anterior to the vertebrae
c. posterior to the sternum and superior to the diaphragm
d. posterior to the sternum and inferior to the diaphragm

Answer 21

C. posterior to the sternum and superior to the diaphragm

Question 22

Inflammation of the outer layer of the heart is:

Answer 22

Pericarditis

Question 23

Pulse rate below 60 beats per minute is called

Answer 23

Bradycardia

Question 24

A balloon surgery for coronary heart disease

Answer 24

Angioplasty