PSY 3122 Chapter Notes - Chapter 5: Vas Deferens, Cremaster Muscle, Seminiferous Tubule
15 Nov 2013
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Document Summary
Chapter 5 male sexual anatomy and physiology. The penis: a male sexual organ consisting if the internal root and the external shaft and glans. Consists of nerves, blood vessels, fibrous tissue and 3 parallel cylinders of spongy tissue. Extensive network of muscles present at the base of the penis these muscles eject semen and urine through the urethra. Shaft: the length of the penis between the glans and the body. Root: the portion of the penis that extends internally into the pelvic cavity. Glans: the head of the penis; it is richly endowed with nerve endings. Skin covering the penile shaft is usually hairless and quite loose allows for expansion when the penis becomes erect. Entire penis sensitive to touch but greatest concentration of nerve endings is found in the glans: 2 specific locations are particularly responsive to stimulation. Corona: the rim, or crown which marks the area where the glans rises abruptly from the shaft.
