Lecture 3 The Heart

Question 1

Stationary blood would exhaust ___ and _____ quickly

Answer 1

oxygen and nutrient supply

Question 2

Saturated blood would become saturated with ____ quickly

Answer 2

waste

Question 3

A ________ allows blood to move throughout the body.

Answer 3

pumping heart

Question 4

The heart beats approx. ____liters/min (resting) to approx. ____liters/min (exercise)

Answer 4

5;30

Question 5

The heart pumps blood through a _____ system

Answer 5

closed

Question 6

The right side of the heart carries _______ blood

Answer 6

deoxygenated

Question 7

The left side of the heart carries ____ blood

Answer 7

oxygenated

Question 8

What is the general size of the average heart?

Answer 8

Approx. 5.5”x3.5” (size of your fist)

Question 9

Where is the heart located?

Answer 9

In the mediastinum region w/in the pericardial cavity, and lays on the diaphragm

Question 10

The heart’s apex points _____, and the right chambers are slightly ______

Answer 10

left; anterior

Question 11

The ___ of the heart is located on the superior border, between atria and great vessels, and is deep to the 3rd rib

Answer 11

BASE

Question 12

The ___ of the heart is located at the “point” of the heart, a part of the left ventricle, and deep to the 5th intercostal space

Answer 12

APEX

Question 13

The pericardium is filled with ____ fluid. How much?

Answer 13

Pericardial fluid. 10-20ml

Question 14

This component of the heart consists of bands of fibro-elastic connective tissue interwoven with the myocardium.

Answer 14

Fibrous Skeleton of the Heart

Question 15

What are the 4 functions of the fibrous skeleton of the heart?

Answer 15

shapes chambers, prevents overfilling, electrically separates atria from the ventricles, forms a frame for the valves

Question 16

What is the name for the receiving chambers of the heart?

Answer 16

The 2 Atria

Question 17

Are the atria thin or thick walled?

Answer 17

Thin walled (only has to pump to the lungs)

Question 18

The left atrium ______

Answer 18

receives oxygenated blood from the LUNGS

Question 19

The right atrium ______

Answer 19

receives de-oxygenated blood from the BODY

Question 20

The pacemaker cells (aka ___&____ nodes) are located in the _____ _____ _____

Answer 20

SA and AV nodes; right atrial wall

Question 21

What is the name for the pumping chambers of the heart?

Answer 21

Ventricles

Question 22

Are the ventricles thin or thick walled?

Answer 22

Thick

Question 23

The ventricles are split by a ____ and have ____ muslces

Answer 23

septum; papillary muscles

Question 24

The right ventricle ______

Answer 24

pumps de-oxygenated blood to the lungs

Question 25

The left ventricle ____

Answer 25

pumps oxygenated blood to the body

Question 26

Which ventricle has the thickest wall? Why?

Answer 26

Left; needs to pump to the whole body

Question 27

The _____ & _____ carry de-oxygenated blood from the body tissues to the right atrium

Answer 27

Superior and Inferior Venae Cavae

Question 28

The ______ carries de-oxygenated blood fro the right ventricles to the lungs

Answer 28

Pulmonary Artery

Question 29

The ______ carry oxygenated blood from the lungs to the left atrium

Answer 29

Pulmonary veins

Question 30

The ___ carries oxygenated blood from the left ventricle to the body

Answer 30

Aorta

Question 31

Which heart valve exists between the right atria and ventricle?

Answer 31

Tricuspid (Right AV Valve)

Question 32

Which heart valve exists between the left atria and ventricle?

Answer 32

Bicuspid/Mitral (Left AV Valve)

Question 33

The "heart strings" of the heart are the ______

Answer 33

chordae tendinae

Question 34

Which heart valve exists between the right ventricle and the pulmonary artery?

Answer 34

Pulmonary Semilunar Valve

Question 35

Which heart valve exists between the left ventricle and the aorta?

Answer 35

Aortic Semilunar Valve

Question 36

What does AV and SV stand for

Answer 36

Atrioventricular Valve; Semilunar Valve

Question 37

The medical name for a heart attack is a ____ ____

Answer 37

myocardial infarction

Question 38

Myocardial Infarction leads to death of ______ due to insufficient _______; therefore the tissues degenerates and becomes nonfunctional (infarct)

Answer 38

heart tissue; insufficient blood supply