Short term responses

Question 1

what are the short term responses of the cv system to a single sport or exercise session

Answer 1

• anticipatory rise
• increase heart rate
• increase cardiac output
• redirection of blood flow

Question 2

what is anticipatory rise

Answer 2

increase in heart rate caused by increase in activity of sympathetic nervous system- prior to exercise

Question 3

what happens during anticipatory rise

Answer 3

adrenal glands release adrenaline into blood stream

Question 4

what is increase heart rate

Answer 4

speed at which the heart beats increases due to due to demand of oxygen

Question 5

what is the equation for cardiac output

Answer 5

stroke volume x heart rate

Question 6

what is cardiac output

Answer 6

amount of blood pumped from the heart in one minute

Question 7

what happens to cardiac output during exercise

Answer 7

demand for oxygen increases therefore heart rate, stroke volume and cardiac output increases

Question 8

what is redirection of blood flow

Answer 8

during exercise blood is needed to the working muscles so blood vessels dilate to supply active areas and constrict to supply inactive areas