Answer 13:
Affect of exercise on the circulatory system:
- Exercise improve the circulation of blood throughout our body.
- This provides the muscles with the necessary oxygen and nutrients to provide the muscles with energy.
- The systemic circulatory system includes blood vessels that deliver oxygen and nutrient-rich blood to tissues throughout your body.
Answer 14:
Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs.
- Ventilation is the process that moves air into and out of the alveoli, and perfusion affects the flow of blood in the capillaries.
- External respiration refers to gas exchange that occurs in the alveoli
- whereas internal respiration refers to gas exchange that occurs in the tissue.