3 years ago

What initiates the defecation reflex?

1 answer:

6 0

Answer:

The chyme, which is already a fecal bolus formed produces an involuntary stimulus reaching the colon that cause the defecation; The first step is the relaxation of the internal sphincter through the sacral nerve (involuntary), and then voluntarily the cerebral cortex through the pudendal nerves that relax the external sphincter.

You might be interested in

The health care provider has prescribed lorazepam to Mr. Jones for anxiety. Mr. Jones has a history of hepatitis C. Why would th

Lina20 [59]

The other medications are hepatotoxic

8 0

2 years ago

What trunk region contains the umbilical region, coxal region, and inguinal region?

9966 [12]

Answer:

The lower region of the human body contains the umbilical region, coxal region, and inguinal region.

Explanation:

4 0