Response to exercise

How do we calculate HR?

• 210-20

• 220-12

• 220-age

• 220-height

During maximal intensity exercise

• HR plateaus

• HR does NOT plateau

What is the venous return?

• the return of the blood to the right atria through the veins

• the backflow of blood to the right ventricle

• the fast flow of blood to the arteries

What is the meaning of cardiac output?

• Cardiac output (CO) is the amount of blood pumped by the lungs

• Cardiac output (CO) is the amount of blood pumped by the heart every minute

• Cardiac output (CO) is the amount of blood pumped by the heart every second

• Cardiac output (CO) is the amount of oxygen pumped by the heart minute

What are the 3 sources of information that determine the action of the CCC (Cardiac Control Centre)?

• •Memory control

  •Intrinsic control

  •Hormonal control

• •Neural control

  •Internal control

  •Head control

• •Muscular control

  •Intrinsic control

  •Extrinsic control

• •Neural control

  •Intrinsic control

  •Hormonal control

If increase in HR is required which nervous system is actioned?

• sympathetic nervous system

• parasympathetic nervous system

What are our three main blood vessels?

Answer explanation

Capillaries

Arteries

Veins

what are pre-capillary sphincters?

• rings of small muscle at the junction between arterioles and capillaries

• rings of rough muscle at the junction between arterioles and veins, which can dilate to control blood flow through the capillary bed.

• rings of smooth muscle at the junction between arterioles and capillaries, which can dilate or constrict to control blood flow through the capillary bed.

• rings of smooth muscle at the junction between arterioles and capillaries, which can dilate or constrict to control oxygen flow

What are capillaries?

• Capillaries bring blood fast into close contact with the muscle and organ cells for gaseous exchange

• Capillaries bring blood slowly into close contact with the muscle and organ cells for gaseous exchange