enteric nervous system

Question 1

what is enteric nervous system

Answer 1

1. The enteric nervous system is embedded in the lining of the gastrointestinal system, beginning in the esophagus and extending down to the anus.
2. The ENS is nicknamed the “second brain”
3. The enteric nervous system can operate independently of the brain and spinal cord but relies on innervation from the autonomic nervous system via the vagus nerve.

Question 2

The neurons of the ENS are collected into two types of ganglia:

Answer 2

1. myenteric (Auerbach’s) plexus

2. submucosal (Meissner’s) plexuses.

Question 3

1. what neurotransmitters are found in the ENS?

2. what neurotransmitters are found in higher quantities?

Answer 3

1. acetylcholine
2. dopamine
3. serotonin.

dopamine and serotonin are found in her quantities.

Question 4

functions of ENS

Answer 4

1. Peristalsis
2. Segmentation
   the contractions in the intestines are carried out by the smooth muscle walls. Unlike peristalsis, which involves the contraction and relaxation of muscles in one direction, segmentation co-occurs in both directions as the circular muscles alternatively contract. This allows for thorough mixing of intestinal contents, known as chyme, to allow greater absorption.
3. Secretion
   The secretion of gastrointestinal hormones, such as gastrin and secretin, is regulated through cholinergic neurons residing in the walls of the digestive tract.