Response to exercise

Question 1

Acute circulatory responses to physical activity

Answer 1

5. temperature regulation- working muscles in heat production in the body during exercise, blood takes heat from within the body to the skin surface
6. selective redistribution of blood- arteries taking blood to working muscles will dialate to allow more blood flow to the muscle

Question 2

Acute respiratory responses to physical activity

Answer 2

2. increased gas exchange- diffusion, movement of a gas from high pressure to low pressure
3. increased oxygen uptake- oxygen uptake increases dramatically during first few minutes of exercise, oxygen deficit

Question 3

Chronic aerobic training adaptations- cardiovascular

Answer 3

2. increased maximum cardiac output
3. increased number of capillaries

Question 4

Chronic aerobic training adaptations- respritory

Answer 4

3. increased anerobic or lactate threshold - Trained athletes are much better able to tolerate lactic acid and can therefore continue to exercise effectively with much higher levels of lactate and hydrogen ions.
4. increased lung/vital capacity
5. decreasing ventilation at rest

Question 5

Chronic aerobic training adaptations- muscular

Answer 5

1. increased mitochondria- number and size
2. increased myoglobin- referred to as muscle hemoglobin