Cardiovascular System- Chapter 5 Review

During exercise, what happens to cardiac output?

• Decreases as heart rate increases

• Increases up to about 60% max HR and then levels off

• Increases linearly throughout (increasing at a predictable rate)

• Represents the amount of blood reaching working muscles

When blood vessels at the muscle sit vasodilate, what happens to the blood vessels at the major organs?

• Less blood is directed towards the muscles

• More blood is directed to the brain and heart

• Vasodilation will also occur at major organs

• Vasoconstriction occurs at vessels supplying major organs

Which blood vessel primarily supplies blood to most of the body?

• Superior vena cava

• Pulmonary vein

• Pulmonary artery

• Aorta

What is the main function of plasma?

• Transport red blood cells via the vascular system

• Remove wastes

• Regulate body temperature

• Do all of the above

What are likely symptoms of hyperthermia ? (Select two)

• Rapid pulse

• Slow pulse

• Shivering

• Cramping

What is a common symptom of hyporthermia?

• Uncontrolled shivering

• Slow and shallow breathing

• Body temperature over 40 degrees

• A pulse that is rapid and bounding and breathing that is fast and deep

How does vasoconstriction of the muscles affect an athlete's performance?

• It decreases blood flow and reduces performance

• It increases blood flow and enhances performance

• It has no effect on performance

• It temporarily boosts cognitive functions

What color is used to represent oxygenated blood in a diagram showing blood movement between the heart and lungs?

• Red

• Blue

• Green

• Yellow

What is the primary purpose of a three-day acclimatisation camp for athletes?

• To increase team spirit and cohesion

• To adjust to new time zones

• To adapt to higher temperatures and humidity

• To practice new strategies

Why is 'blood boosting' prohibited by WADA?

• It is considered a natural method of performance enhancement

• It can cause long-term health issues

• It provides an unfair competitive advantage

• It is less effective than other methods