Autonomic Innervation of Abdominopelvic region Flashcards
Which part of the spinal cord provides SNS
Thoracolumbar region
Which part of the spinal cord provides PNS
Craniosacral region
What are the effects of the ANS on the Longitudinal and Circular muscle fibres of teh GIT
SNS: no motility
PNS: motility
What are the effects of the ANS on the Spincter muscles of the GIT
SNS: Contraction
PNS: relaxation
What are the effects of the ANS on the Glands of teh GIT
SNS: No secretion
PNS: Secretion
What are the effects of the ANS on the Splenic Capsule
SNS: Contraction
PNS: No effect
What are the effects of the ANS on the Pancreas
Exocrine pancreas:
SNS: no secretion
PNS: secretion
Endocrine pancreas
SNS: Insulin secretion
PNS: no effect
What are the effects of the ANS on the Urinary Bladder
Functional Bladder Sphincter:
SNS: Contraction
PNS: Relaxation
Detrusor Muscle:
SNS: Relaxation
PNS: Contraction
What are the effects of the ANS on the Seminal vesicle and ductus deferens
SNS: contraction (ejaculation)
PNS: no effect
What are the effects of the ANS on the uterus
SNS: Contraction or relaxation (depending on hormonal status)
PNS: No effect
What are the effects of the ANS on the arteries
SNS: Vasoconstriction
PNS: Vasodilation of the arteries of penis and clitoris (erection)
What are the effects of the ANS on the suprarenal glands (medulla of)
SNS: release of adrenalin
PNS: no effect
What are the effects of the ANS on the urinary tract
SNS: Vasoconstriction (urine formation)
PNS: Vasodilation
Explain how referred pain works
Convergence of:
- somatic fibres
- visceral afferent fibres
to a common level of the spinal cord,
Where is pancreatic pain referred
Area above umbilicus right around the torso
Where is stomach pain referred
To area near stomach
Where is liver pain reffered
To:
-where liver is
Where is gallbladder pain referred
To:
- where gallbladder is
- Shoulder region
Where is small intestine pain referred
To area encircling the umbilicus
Where is large intesting pain referred
To area just under the umbilicus
Where is bladder pain referred
To area where bladder is
Where is gonadal pain referred
To inguinal canal
What are the autonomic plexuses in the abdomen and pelvis
Celiac plexus Superior mesenteric plexus Inferior mesenteric plexus Superior hypogastric plexus Inferior hypogastric plexus (NB there are 2 as they are along the inguinal vessels)
What does the Vagus nerve supply in the abdominal region
Foregut and midgut associated organs (up till the splenic flexture)
Which plexuses does the Vagus nerve supply in the abdomen
Superior mesenteric plexus
What nucleus is the SNS supply for the testis?
Renal gangion (see pl. 394)
