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The vas deferens (pl.: vasa deferentia), ductus deferens (pl.: ductūs deferentes), or sperm duct is part of the male reproductive system of many vertebrates. In mammals, spermatozoa are produced in the seminiferous tubules and flow into the epididymal duct. The end of the epididymis is connected to the vas deferens.
Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, in particular the large arteries and small arterioles. The process is the opposite of vasodilation, the widening of blood vessels. The process is particularly important in controlling hemorrhage and reducing acute blood loss.
In most terrestrial mammals, the scrotum (pl.: scrotums or scrota; possibly from Latin scortum, meaning "hide" or "skin") [1] [2] or scrotal sac is a part of the external male genitalia located at the base of the penis. It consists of a sac of skin containing the external spermatic fascia, testicles, epididymides, and vasa deferentia. The ...
Erectile tissue is present in the anterior part of the nasal septum [4] and is attached to the turbinates of the nose. The nasal cycle occurs as the erectile tissue on one side of the nose congests and the other side decongests. This process is controlled by the autonomic nervous system with parasympathetic dominance being associated with ...
Queen notes that when you incorporate other erogenous zones—like the nipples—you add a separate nerve pathway to your sexual stimulation.m“The upshot, called a blended orgasm, can be extra ...
The cremaster muscle occasionally experiences painful spasms or cramps in adult males which can be chronic and debilitating. Treatment for these spasms ranges from minor surgery to injection with Botulinum A toxin to the regular application of heat to relax the muscle. Surgery, including the excision of the cremaster muscle, has apparently been ...
In some bat species, the prepuce contains an erectile tissue structure called the accessory corpus cavernosum. [6] Penile sheath of a Great Dane. During musth, a male elephant may urinate with the penis still in the sheath, which causes the urine to spray on the hind legs. [7] Male dogs have a conspicuous penis sheath. [8]
The proximal part of the corpus spongiosum is expanded to form the urethral bulb, and lies in apposition with the inferior fascia of the urogenital diaphragm, from which it receives a fibrous investment. The urethra enters the bulb nearer to the superior than to the inferior surface.