Question

During exercise, sensory receptors detect changes in oxygen and carbon dioxide levels in the blood. This information is then sent to the brain's medulla, which causes the heart to beat faster and increases the rate of breathing. Exercising also causes the nervous system to signal the pancreas and thyroid gland to release hormones which regulate metabolism. Which statement is best demonstrated by this scenario? A. Nerves transmit and respond to every major system in the body. B. Increased heart rate and blood flow decrease oxygen supply. C. Exercise is important for the body to function properly. D. Hormones act as signal molecules between all body systems.

Answer 1

Nerves transmit and respond to every major system in the body.

Answer 2

A. Nerves transmit and respond to every major system in the body.

Step-by-step explanation:

Nerves are the part of the nervous system which is one of the major communication systems in the body. The given scenario shows that nerves transmit the information to the cardiovascular system (heart), respiratory system (breathing rate) and endocrine (release of hormones) system of the body to regulate the increased demand of oxygen and energy during exercise.