During exercise, sensory receptors detect changes in oxygen and carbon dioxide levels in the blood. This information is then sen

Question

2 months ago

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During exercise, sensory receptors detect changes in oxygen and carbon dioxide levels in the blood. This information is then sen

t 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. Hormones act as signal molecules between all body systems. B. Exercise is important for the body to function properly. C. Nerves transmit and respond to every major system in the body. D. Increased heart rate and blood flow decrease oxygen supply.

Biology

2 answers:

11111nata11111 [2.5K] · Answer 1 · 2026-03-23T00:13:00+03:00

A. Hormones function as signaling molecules among all body systems

Peripheral Chemoreceptors (Carotid + Aortic Bodies) and Central Chemoreceptors in the Medulla Oblongata sense elevated Carbon Dioxide levels in the bloodstream during physical activity. The respiratory center located in the Medulla Oblongata + PONS prompts the intercostal muscles and diaphragm to contract, which boosts the rate and depth of breathing to lower blood Carbon Dioxide levels.

The thyroid gland produces thyroxine, which accelerates metabolism (the speed at which cells utilize glucose)

11111nata11111 [2.5K] · Answer 2 · 2026-03-23T00:10:34+03:00

11111nata11111 [2.5K]2 months ago

3 0

Answer:

B. Nerves function to transmit information and react to every major body system.

Explanation: