Question

I need help on 13 and 14

Answer 1

The effects of exercise on the circulatory system. This provides the muscles with the necessary oxygen and nutrients to provide the muscles with energy. During exercise strokevolume increases because: more blood is sent back to the heart due to the muscles squeezing blood in the veins. and I'll try to answer the other one just wait

Answer 2

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.