Is the superior hypogastric plexus sympathetic or parasympathetic?
Is the superior hypogastric plexus sympathetic or parasympathetic?
The superior hypogastric plexus contains the sympathetic function for the urogenital system. Parasympathetic function for the urogenital system is supplied by the S 1-L4 nerve roots that contribute to the pelvic splenic nerves. Somatic function from Sl, S2, S3, and S4 is carried predominantly by the pudendal nerve.
What does the pelvic plexus innervate?
The pelvic plexus is an association of neurons that govern visceral tissues involved in eliminative and reproductive functions. For example, the vas deferens and seminal vesicle are ventral in position and thus are innervated by more ventrally located pelvic neurons.
What does the Hypogastric plexus do?
The superior hypogastric plexus is situated in the bifurcation of the aorta on the fifth lumbar vertebral body and the sacrum. This sympathetic plexus innervates the smooth muscles of the seminal vesicle, which contracts as the bladder neck closes during ejaculation.
What organs are innervated by the hypogastric plexus?
The inferior hypogastric plexus is a paired structure, meaning there is one on the left and the right side of the body. These are located on either side of the rectum in males, and at the sides of the rectum and vagina in females….
| Inferior hypogastric plexus | |
|---|---|
| TA2 | 6715 |
| FMA | 6643 |
| Anatomical terms of neuroanatomy |
What is superior hypogastric plexus?
The superior hypogastric plexus (SHP) is a bilateral continuation of the paravertebral sympathetic chain with contribution from aortic plexus nerve fibers. The SHP sends out multiple branches to various smaller plexuses supplying sympathetic innervation to all the pelvic viscera except the ovaries and fallopian tubes.
How superior hypogastric plexus is formed?
The SHP is formed by the bilateral lowest lumbar splanchnic nerves (LSNs) below the aortic bifurcation. The SHP is located anterior to left common iliac artery (CIA), the left common iliac vein, and the fifth lumbar vertebral body; B. The SHP is formed above the aortic bifurcation.
What is Hypogastric?
Definition of hypogastric : of or relating to the lower median region of the abdomen.
What is the superior hypogastric plexus made of?
The superior hypogastric plexus is made up of nerve fibers extending inferiorly from the paravertebral sympathetic chain, joining together opposite the aortic bifurcation, anterior to the fourth and fifth lumbar vertebrae.
What does the Hypogastric nerve innervate?
Sympathetic innervation: Hypogastric nerve (L1–L4) via the caudal mesenteric ganglion. Postganglionic fibers innervate the bladder wall (β2 receptors) and proximal urethra (α1 with some α2 receptors). Parasympathetic innervation: The pelvic nerve (sacral segments) innervates the detrusor smooth muscle.
Is Hypogastric nerve sympathetic or parasympathetic?
The hypogastric nerve arises from the ventral nerve roots of T12 to L3 and supplies sympathetic nerve innervation. The hypogastric nerve may be associated with the visceral fascia of the mesorectum.
