Muscles and Fascia of Perineum

Question 1

External Anal Sphincter action and Innervation

Answer 1

Relaxes from tonic contraction

Pudental Nerve S2-4

Question 2

Superficial transverse perineal Action and Innervation

Answer 2

Fixation and Stablisation of perineal Body

Pudental Nerve S2-4

Question 3

Deep transverse perineal Action and Innervation

Answer 3

Fixation and stablisation of perineal body. Expulsion of semen and urine.

Pudental Nerve S2-4

Question 4

External Urethral Sphincter Action and Innervation

Answer 4

Compress urethra to maintain urinary continence

Pudental Nerve S2-4

Question 5

Bulbospongiosus Male Action and Innervation

Answer 5

Compresses Penis Bulb and Contributes to Erection, Orgasm Contractions and Ejaculation

Pudental Nerve S2-4

Question 6

Bulbospongiosus Female Action and Innervation

Answer 6

Compresses Vestibular Bulb and Constricts Vaginal Orifice

Pudental Nerve S2-4

Question 7

Ischiocavernosus (Female) Action and Innervation

Answer 7

Tense Vagina during Orgasm

Pudental Nerve S2-4

Question 8

Ischiocavernosus (Male) Action and Innervation

Answer 8

Stabilise erection by compressing corpus cavernosum

Pudental Nerve S2-4

Question 9

Perineum muscles innervation

Answer 9

Pudental Nerve S2-4