Ad
related to: pudendal nerve branches and innervation diagram quiz quizlet chemistry study guidestudy.com has been visited by 100K+ users in the past month
Search results
Results From The WOW.Com Content Network
The pudendal nerve is the main nerve of the perineum. [1]: 274 It is a mixed (motor and sensory) nerve and also conveys sympathetic autonomic fibers.It carries sensation from the external genitalia of both sexes and the skin around the anus and perineum, as well as the motor supply to various pelvic muscles, including the male or female external urethral sphincter and the external anal sphincter.
The perineal nerve is a branch of the pudendal nerve. [1] [2] It lies below the internal pudendal artery.It accompanies the perineal artery.It passes through the pudendal canal for around 2 or 3 cm. [1] [2] Whilst still in the canal, it divides into superficial branches and a deep branch. [1]
The deep branch of the perineal nerve (or muscular branches) is a nerve of the perineum. It is a branch of the perineal nerve , from the pudendal nerve . It supplies the superficial transverse perineal muscle , bulbospongiosus muscle , ischiocavernosus muscle , the bulb of penis , levator ani , and the external anal sphincter .
The posterior scrotal branches are two in number, medial and lateral. They are branches of the perineal nerve, which is itself a branch of the pudendal nerve. The pudendal nerve arises from spinal roots S2 through S4, travels through the pudendal canal on the fascia of the obturator internus muscle, and gives off the perineal nerve in the perineum.
The dorsal nerve of the penis is the deepest of three divisions of the pudendal nerve; it accompanies the internal pudendal artery along the ramus of the ischium; it then runs forward along the margin of the inferior ramus of the pubis, between the superior and inferior layers of the fascia of the urogenital diaphragm.
A labelled diagram of the branches of the pudendal nerve in human males. ... Description= Pudendal nerve, course and branches |Source= Essential Clinical Anatomy. K.L ...
The muscle helps maintain continence of urine along with the internal urethral sphincter which is under control of the autonomic nervous system.The external sphincter muscle prevents urine leakage as the muscle is tonically contracted via somatic fibers that originate in Onuf's nucleus and pass through sacral spinal nerves S2-S4 then the pudendal nerve to synapse on the muscle.
As part of the glans penis, the frenulum is innervated by divisions of the pudendal nerve; the dorsal nerve of the penis and a branch of the perineal nerve. [ 10 ] [ 11 ] Blood supply to the frenulum is provided by branches of the dorsal artery of the penis that curve around each side of the neck to enter the frenulum and the glans from its ...