Question

The submucosal plexus, located in the submucosal layer of the GI tract, regulates:

a) Blood flow
b) Hormone production
c) Nerve impulses
d) Muscle contractions

Answer 1

The submucosal plexus is responsible for regulating digestive secretions in the submucosal layer of the GI tract.

Step-by-step explanation:

The submucosal plexus, also known as the plexus of Meissner, is located in the submucosal layer of the gastrointestinal (GI) tract. This plexus is part of the enteric nervous system and is responsible for regulating the activity of the glands and the smooth muscle within the submucosal layer. Specifically, the submucosal plexus plays a key role in controlling digestive secretions and can react to the presence of food, which is critical for proper digestion. Therefore, the correct answer to the question is that the submucosal plexus regulates the activity of glands (option b).