Question

During sleep, the metabolic rate is ________ and the number of respirations _________.

1) low, increases
2) high, decreases
3) low, decreases
4) high, increases

Answer 1

During sleep, the body's metabolic rate is low and the number of respirations decreases to align with reduced energy demands and the slowing of physiological activities.Hence, the correct answer is option 2.

Step-by-step explanation:

During sleep, the metabolic rate is low, and the number of respirations decreases. This is because the body's energy demands are reduced, and less oxygen is needed during this restful period. This slowdown in metabolism and respiratory activity aligns with the decrease in brainwave activity and the slowing down of various physiological processes as we enter different stages of sleep, particularly during the Non-Rapid Eye Movement (NREM) sleep stages.