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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.
The perineal body (or central tendon of perineum) is a pyramidal fibromuscular mass in the middle line of the perineum at the junction between the urogenital triangle and the anal triangle. In males, it is found between the bulb of the penis and the anus ; in females, it is found between the vagina and anus, and about 1.25 cm (0.49 in) in front ...
Anatomography is an interactive website which supports generating anatomical diagrams and animations of the human body. The Anatomography website is maintained by the DBCLS (Database Center for Life Science) non-profit research institute located at the University of Tokyo.
Many noted body parts are of dubious provenance [1] and most were separated from their bodies post-mortem. [2] In some faiths, veneration of the dead may include the preservation of body parts as relics. Body parts supposed to belong to major religious figures are kept in temples, including the tooth of the Buddha, Muhammad's beard, and Jesus's ...
The two gluteus maximus muscles are the largest muscles in the human body. They are responsible for movements such as straightening the body into the upright (standing) posture when it is bent at the waist; maintaining the body in the upright posture by keeping the hip joints extended; and propelling the body forward via further leg (hip ...
The human female reproductive system is made up of the internal and external sex organs that function in the reproduction of new offspring. The reproductive system is immature at birth and develops at puberty to be able to release matured ova from the ovaries , facilitate their fertilization , and create a protective environment for the ...
[43]: 5 There is essentially no emphasis given to any particular body part, not the breasts, buttocks, or belly. Moving forward there is more evidence that fashion somewhat dictated what people believed were the proper female body proportions. This is the case because the body is primarily seen through clothing, which always changes the way the ...
The list below describes such skeletal movements as normally are possible in particular joints of the human body. Other animals have different degrees of movement at their respective joints; this is because of differences in positions of muscles and because structures peculiar to the bodies of humans and other species block motions unsuited to ...