Question

question 31
1 pts
the amount of blood that is pumped out of the left ventricle with each heartbeat is known as

question 32
1 pts
which of the following statements about heart rate is false:
maximum heart rate can be estimated using a persons age
the heart rate is the number of times the heart beats per minute.
there is a direct relationship between heart rate and intensity of work
during intense exercise, the heart rate may increase to up to 220 bpm and occasionally even higher.

question 33
1 pts
hematocrit is the percentage of the blood that is made up of:
plasma
red blood cells
white blood cells
red blood cells and plasma

Explanation:

• Question 31: The amount of blood pumped out of the left ventricle with each heartbeat is stroke - volume. It is a key concept in cardiovascular physiology.
• Question 32: All the statements about heart rate are true. Maximum heart rate can be estimated as 220 - age. Heart rate is beats per minute, has a direct relationship with work intensity, and can reach up to 220 bpm or higher during intense exercise.
• Question 33: Hematocrit is the percentage of blood volume occupied by red blood cells.

Answer:

• Question 31: Stroke - volume
• Question 32: None of the above (as all statements are true)
• Question 33: B. red blood cells