Kinesiology 3222A/B Lecture Notes - Lecture 23: Urethral Sphincters, Fructose, Ampulla
24 Apr 2017
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Penis: encloses spongy urethra, 3 column of erectile tissue. Loose fitting skin (foreskin/prepuce: 2 corporus cavernosa (lateral, corpus spongiosum, 3 structural regions, root - attachment, not visible, attaches to pubis symphysis, 1/3 of penis, continuous w corpus cavernosa, body, visible (shaft, glans, visible (shaft, neck. Space between body and glans: corona, ridge superior to neck, external urethral orifice, runs through spongy membrane. Hypospadias: external urethral orifice on ventral surface of penis, relatively common congenital anomaly, midshaft, penoscrotal. Junction be where scrotum ends and penis begins: this can be surgically corrected w minimal complications. Suspensory ligament: the main anchoring support to the penis, deep fascia. Forms a sling that attaches to the root. Fundiform ligament: contributes to penis suspension, elastic fibres. Erectile tissue: corpora cavernosa, corpora bc there is 2, these are connective tissue w vacuoles that collect blood, this collection of blood creates the erection, corpus spongiosum, hold open the spongy urethra for sperm, collagen fibers.
