Heart Physiology Introduction

Question 0

Is flow to one organ controlled dependently or independently of other organ blood flow?

Answer 0

Independently

Question 1

Does the cardiovascular system maintain homeostasis of interstitial fluid or intracellular fluid?

Answer 1

Interstitial fluid

Question 2

What is the equation we need to know regarding flow and pressure and resistance?

Answer 2

Q=dP/R

Question 3

What is resistance equal to?

Answer 3

R=(8Ln)/(pi*r^4)

L - length
r - radius
n - viscosity

Question 4

The right AV valve is also known as…

Answer 4

The tricuspid

Question 5

What are the tendons that anchor valve flaps to the heart called?

Answer 5

chordae tendoneae

Question 6

The left AV valve is also known as…

Answer 6

Bicuspid or mitral valve

Question 7

Semilunar valves have how many flaps?

Answer 7

Three

Question 8

The right semilunar valve is called what?

Answer 8

Pulmonary valve

Question 9

The left semilunar valve is called what?

Answer 9

Aortic valve

Question 10

What determines cardiac output?

Answer 10

SV x HR

Question 11

What is the node in the right atrium called? The left atrium?

Answer 11

Sinoatrial node

Atrioventricular node

Question 12

What connects the SA node to the AV node?

Answer 12

Bachmann’s bundle

Question 13

What connects the SA node to the bundles of His?

Answer 13

internodal tracts

Question 14

What are the five heart operations that must be working correctly in order to have an efficient system?

Answer 14

1. Regular contraction (not arrhythmic)
2. Regular valve opening (not stenotic)
3. Regular valve closing (no regurgitation)
4. Regular forcefulness in contraction (no muscle failure)
5. Adequate ventricular filling during diastole