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During ejaculation, the smooth muscle in the walls of the vas deferens contracts reflexively, thus propelling the sperm forward. This is also known as peristalsis . [ 11 ] The epithelial sodium channel ENaC is strongly expressed in smooth muscle cells of the vas deferens. [ 1 ]
Mean arterial pressure (MAP)is a weighted average of systolic and diastolic blood pressures, and is a better measurement of perfusion over the duration of the cardiac cycle. [16] Vasodilation works to decrease vascular resistance and blood pressure through relaxation of smooth muscle cells in the tunica media layer of large arteries and smaller ...
Blood vessels are the tubular structures of a circulatory system that transport blood throughout a vertebrate's body. [1] Blood vessels transport blood cells, nutrients, and oxygen to most of the tissues of a body.
Meaning Origin language and etymology Example(s) bacillus: rod-shaped Latin baculus, stick Bacillus anthracis: bacteri-Pertaining to bacteria: Latin bacterium; Greek βακτήριον (baktḗrion), small staff bacteriophage, bactericide: balan-of the glans penis or glans clitoridis: Greek βάλανος (bálanos), acorn, glans balanitis: bas-
This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axes. The meaning of terms that are used can change depending on whether an organism is bipedal or quadrupedal.
Mean blood pressure drops over the whole circulation, although most of the fall occurs along the small arteries and arterioles. [35] Gravity affects blood pressure via hydrostatic forces (e.g., during standing), and valves in veins, breathing , and pumping from contraction of skeletal muscles also influence blood pressure in veins.
Erect bulbus glandis (1) in a Labrador Retriever. The bulbus glandis (also called a bulb or knot) is an erectile tissue structure on the penis of canid mammals. [1 ...
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 ...