Starlings Law And Cardiovascular Drift

Question 1

What is starlings law?

Answer 1

Where increased venous return leads to an increase in stroke volume

Question 2

What are the stages of starlings law?

Answer 2

1. Increased venous return
2. Greater diastolic filling of the heart
3. Cardiac muscle stretched
4. Greater force of contraction
5. Increased ejection fraction

Question 3

What is ejection fraction?

Answer 3

The proportion of blood in the left ventricle that’s pumped out

Question 4

What is cardiovascular drift?

Answer 4

Where a decrease in venous return leads to an increase in heart rate

Occurs during prolonged exercise in warm environments

Question 5

What are the stages of cardiovascular drift?

Answer 5

1. Sweating leads to drop in blood volume
2. Venous return decreases
3. Stroke volume decreases
4. Heart rate increases to compensate for drop in stroke volume