Circulatory and Respiratory system

Which type of blood vessel carries blood TO the heart?

• Arteries

• Capillaries

• Veins

• Venules

What type blood vessel exchanges nutrients and oxygen in the tissues?

• Arteries

• Veins

• Capillaries

• Venules

What Cardiovascular Acute Response does not usually increase throughout exercise?

• Diastolic blood pressure

• Systolic blood pressure

• Stroke volume

• Heart rate

Cardiac output is:

• Tidal volume x stroke volume

• Stroke volume x heart rate

• Heart rate x ventilation

• Stroke volume x venous return

The redistribution of blood flow during exercise increases to the:

• Kidneys

• Liver

• Brain

• Muscles

Maximal exercise will result in the following acute respiratory response:

• Increased tidal volume

• Increased rate of gaseous diffusion at the lungs

• Decreased production of CO2

• Increased systemic gaseous exchange

The most important factor for increasing cardiac output from submaximal to maximal exercise is

• Heart rate

• Stroke volume

• Arteriovenous oxygen difference

• Redistribution of blood flow

During continuous exercise the heart rate increases and the force of contraction is also greater. This results in:

• An increase in diastolic blood pressure.

• An increase in systolic blood pressure.

• An increase in diastolic and systolic blood pressure.

• No change to systolic blood pressure.

Gas exchange in the muscle occurs at the tissue-capillary interface via diffusion. During physical activity which condition below outlines why diffusion takes place?

• Blood oxygen levels are high and muscle oxygen levels are low.

• Blood oxygen levels are low and muscle oxygen levels are high.

• Alveoli oxygen levels are high and blood oxygen levels are low.

• Alveoli oxygen levels are low and blood oxygen levels are high.

Systolic blood pressure:

• Is measured as part of the systemic circulation when blood is pumped from the left-hand side of the heart after it has been received from the lungs and is oxygenated.

• Is always higher than diastolic blood pressure.

• Rises rapidly during exercise as more blood is pumped through the heart.

• All of the above.