2.4 The Nerve Supply to the Abdominal Viscera

Question 1

What are the 3 Sympathetic Nerves which supply the Abdominal Viscera?

Answer 1

1. Abdominopelvic Splanchnic Nerves (Greater, Lesser and Least)
2. Prevertebral Sympathetic Ganglia
3. Abdominal Aortic Plexuses

Question 2

What are the 3 Parasympathetic Nerves which supply the Abdominal Viscera?

Answer 2

1. Anterior and Posterior Vagal Trunks

2. Pelvic Splanchnic Nerves

Question 3

What happens to G.I. Secretion under Parasympathetic Innervation?

Answer 3

There is an increase in Secretion

Question 4

What happens to G.I. Secretion under Sympathetic Innervation?

Answer 4

There is a decrease in Secretion

Question 5

What happens to Peristalsis/G.I. Motility under Parasympathetic Innervation?

Answer 5

There is an increase in Peristalsis / G.I. Motility

Question 6

What happens to Peristalsis/G.I. Motility under Sympathetic Innervation?

Answer 6

There is an decrease in Peristalsis / G.I. Motility

Question 7

What happens to G.I. Blood Vessels under Parasympathetic Innervation?

Answer 7

Vasodilation of the G.i. Blood Vessels occurs

Question 8

What happens to G.I. Blood Vessels under Sympathetic Innervation?

Answer 8

Vasoconstriction of the G.i. Blood Vessels occurs

Question 9

What is the effect of a Vagotomy on Gastric Secretions?

Answer 9

There will be a permanent decrease of Gastric Secretions

Question 10

What does Splanchnic mean?

Answer 10

Viscera

Question 11

What is the Difference between the Abdominopelvic Splanchnic Nerves, and the Pelvic Splanchnic Nerves?

Answer 11

The Abdominopelvic Splanchnic Nerves supply Sympathetic Innervation
The Pelvic Splanchnic Nerves supply Parasympathetic Innervation

Question 12

What is the main difference in the arrangement of Ganglia in the Sympathetic and Parasympathetic Nervous Systems?

Answer 12

Sympathetic Ganglia tend to be close to the Vertebrae (Short Pre-Ganglionic Fibers, Long Post-Ganglionic Fibers)
Parasympathetic Ganglia tend to be close to the Target Organ (Long Pre-Ganglionic Fibers, Short Post-Ganglionic Fibers)