Cardiology

Question 1

What is the physiologic purpose of the cardiovascular system?

Answer 1

circulation of blood

Question 2

What delivers blood from the heart to the tissues?

Answer 2

arteries

Question 3

What returns blood to the heart?

Answer 3

veins

Question 4

What is the central pump that moves blood forward?

Answer 4

heart

Question 5

What is where all exchanges occur?

Answer 5

capillaries

Question 6

Deoxygenated blood returns to the right heart/pulmonary circulation to take up oxygen and drop off carbon dioxide.

Answer 6

pulmonary circulation

Question 7

Oxygenated blood leaves left heart to go to systemic circulation to deliver oxygen to tissues and take up carbon dioxide.

Answer 7

systemic circulation

Question 8

True or false: all arteries carry blood away from the heart.

Answer 8

true

Question 9

when do heart muscles contract?

Answer 9

systole

Question 10

when do heart muscles relax/fill?

Answer 10

diastole

Question 11

What component of the CV system has the function of venous return of deoxygenated blood to the heart?

Answer 11

vena cava

Question 12

What component of the CV system has conduit and booster filling functions?

Answer 12

atria

Question 13

What component of the CV system has the function of pumping to pulmonary and systemic circulations?

Answer 13

ventricles

Question 14

Which ventricle has thickest muscle walls?

Answer 14

left ventricle

Question 15

Which system is the lower pressure system?

Answer 15

pulmonary

Question 16

What components of the CV system perform arterial delivery to circulations?

Answer 16

pulmonary artery and aorta

Question 17

Does the pulmonary artery or the aorta carry oxygenated blood?

Answer 17

pulmonary artery

Question 18

Does systole pumping of the atria and ventricles occur at the same time or sequentially?

Answer 18

sequentially

Question 19

A the CV system is a central muscular pump with _______ valves supporting blood flow.

Answer 19

unidirectional

Question 20

What does spontaneous depolarization at the sinus node initiate?

Answer 20

events that result in mechanical pumping

Question 21

What is the right AV valve?

Answer 21

tricuspid

Question 22

What is the left AV valve?

Answer 22

mitral

Question 23

What is the role of the specialized cardiac myocytes of the conduction system?

Answer 23

control spread of depolarization from sinus node through the heart

Question 24

What is the role of the working cardiac muscle myocytes?

Answer 24

responsible for muscle contraction and pumping blood, make up most of the atria and ventricles

Question 25

Why is there a pause between atrial depolarization and ventricular depolarization?

Answer 25

to optimize ventricular filling before ventricular pumping starts

Question 26

Circulation is a closed system this means that injury will effect?

Answer 26

what comes after it and before it

Question 27

Are right and left ventricles contracting at the same time or sequentially?

Answer 27

same time

Question 28

What drives blood flow through the circulatory system?

Answer 28

pressure

Question 29

Systemic circulation is a ________ pressure system than the pulmonary circulation.

Answer 29

higher

Question 30

Veins are ______ pressure than arteries.

Answer 30

lower

Question 31

What causes the valves of the heart to open and close?

Answer 31

pressure differences across the valves

Question 32

What sensors "sense" blood pressure?

Answer 32

baroreceptors

Question 33

What sensors "sense" the tissue needs?

Answer 33

chemoreceptors

Question 34

What is unique about depolarization in the heart?

Answer 34

no true resting potential stage

Question 35

What sets the heart rate?

Answer 35

SA node

Question 36

What allows for sequential atrial then ventricular contraction?

Answer 36

AV node

Question 37

What is responsible for the rapid spread of depolarization for near simultaneous contraction of the chamber?

Answer 37

internal pathways/purkinje fibers

Question 38

What is the functional differences in velocity of transmission?

Answer 38

To create two separate contractions

Question 39

Which comes first in the heart electrical or mechanical activity?

Answer 39

electrical