Question

question 11 of 16sci_bio_unit8a_2526_kby sending signals that stimulate the release of hormones, the human brain controls the cycle of digestion, including the process of nutrient absorption. the brain initiates the release of these hormones at certain times of the day, based on daily circadian rhythms. these hormones then stimulate nutrient absorption.part a:based on this information, which body system is most directly regulating the digestive system?○ excretory○ endocrine○ respiratory○ nervouspart b:which statement best supports the answer to part a?○ pores open in the skin so that excess water can be released, making room for the increased absorption of nutrients.○ glands release chemicals into the blood, leading to the increased absorption of nutrients.○ intake of oxygen is reduced so that nutrients can be more readily absorbed.○ muscle contractions are increased, reducing water in the body to improve the absorption of nutrients.

Explanation:

Part A: The brain sends signals to trigger hormone release for digestive regulation; the nervous system initiates this signaling pathway to control circadian-based digestive functions.
Part B: The nervous system's signal triggers hormone release (from glands into blood) to boost nutrient absorption, which directly supports the Part A answer.

Answer:

Part A: Nervous
Part B: Glands release chemicals into the blood, leading to the increased absorption of nutrients.