Heart Physiology Introduction Flashcards Preview

CRRAB I - Week 1 > Heart Physiology Introduction > Flashcards

Flashcards in Heart Physiology Introduction Deck (15)
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0

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

Interstitial fluid

1

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

Independently

2

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

Q=dP/R

3

What is resistance equal to?

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

L - length
r - radius
n - viscosity

4

The right AV valve is also known as...

The tricuspid

5

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

chordae tendoneae

6

The left AV valve is also known as...

Bicuspid or mitral valve

7

Semilunar valves have how many flaps?

Three

8

The right semilunar valve is called what?

Pulmonary valve

9

The left semilunar valve is called what?

Aortic valve

10

What determines cardiac output?

SV x HR

11

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

Sinoatrial node
Atrioventricular node

12

What connects the SA node to the AV node?

Bachmann's bundle

13

What connects the SA node to the bundles of His?

internodal tracts

14

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

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