Innervation and Blood Supply

Question 1

what does the celiac plexus consist of

Answer 1

celiac, superior mesenteric, and renal ganglia found surrounding the roots of the celiac trunk, superior mesenteric and renal arteries

Question 2

which nerve fibres are received by the celiac plexus

Answer 2

parasympathetic, sympathetic and nociceptive fibres

Question 3

where does the parasympathetic input for the coeliac plexus come from

Answer 3

the vagus nerve

Question 4

what does the celiax plexus supply

Answer 4

the inferior part of
- oesophagus
- stomach
- pancreas
- spleen
- kidneys
- liver
- gall bladder
- small intestine

Question 5

what is the function of the celiac plexus

Answer 5

transmit visceral and sensory impulses like pain or reflexes from the foregut and midgut, increasing gland secretion and promoting peristalsis.

Question 6

what does the sympathetic division of the celiac plexus do

Answer 6

inhibits peristalsis, constricting blood vessels and redirecting blood to skeletal muscles

Question 7

what is the innervation of the stomach

Answer 7

the vagus nerves and celiac plexus

Question 8

what is the parasympathetic innervation of the stomach

Answer 8

vagus nerve

Question 9

what is the sympathetic innervation of the stomach

Answer 9

the celiac plexus

Question 10

which nerves supply the pancreas

Answer 10

vagus nerve
celiac plexus
superior mesenteric plexus

Question 11

what does the vagus nerve innervate

Answer 11

most tissues involved in nutrient metabolism (stomach, pancreas liver)

Question 12

which cranial nerves supply the pancreas

Answer 12

vagus parasympathetically and the spinal accessory sympathetically

Question 13

which nerves innervate the liver

Answer 13

hepatic nervous plexus, which contains sympathetic fibres from the celiac plexus and parasympathetic fibres from the anterior and posterior vagal trunks

Question 14

describe the innervation of the gall bladder

Answer 14

coeliac plexus carries sympathetic and sensory fibres
vagus nerve delivers parasympathetic innervation

Question 15

what does the parasympathetic innervation of the gall bladder allow

Answer 15

contraction of the gall bladder and secretion of bile into the cystic duct

Question 16

describe the blood supply of the gall bladder

Answer 16

cystic artery (branch of the right hepatic artery, derived from the common hepatic artery, one of the branches of the coeliac trunk)

Question 17

describe the blood drainage of the gall bladder

Answer 17

cystic veins which drain directly into the portal vein