Exercise heart

Question 1

What does the respiratory pump do for exercise

Answer 1

Negative intrathoraic pressure during inspiration

Increases VR/preload

Question 2

What sets the operating set point of baroreceptors higher

Answer 2

Central command

Question 3

Anticipation of exercise is what mechanism

What inputs allow this to occur

Answer 3

Feed forward mechanism

Regulated by peripheral inputs

Question 4

The carotid/chemoreflex is only activates during exercise and not rest

Answer 4

Means it’s sensitised

Question 5

What does increasing the ventricular wall thickness increase

Answer 5

Stroke volume

Question 6

What’s decreased during rest and how does this occur

Answer 6

Heart rate decreased

Increase parasympathetic activation