perineal flexure
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flexure — A bend, as in an organ or structure. SYN: flexura [TA]. [L. flexura] anorectal f. [TA] the anteroposterior curve or angle, with convesity directed anteriorly, of the anorectal junction; tonus of the puborectalis (muscle) produces the … Medical dictionary
Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… … Medical dictionary
junction — The point, line, or surface of union of two parts, mainly bones or cartilages. SYN: juncture. SYN: junctura (2) [TA], junctio. adhering junctions intercellular junctions, including zonulae adherentes, hemidesmosomes, and desmosomes, that… … Medical dictionary
flexura anorectalis — [TA] anorectal flexure: the bend at the caudal end of the rectum, where it deviates caudally and posteriorly. Called also f. perinealis [TA alternative] and perineal flexure … Medical dictionary
Rectum — The last 6 to 8 inches of the large intestine. The rectum stores solid waste until it leaves the body through the anus. The word rectum comes from the Latin rectus meaning straight (which the human rectum is not). * * * The terminal portion of… … Medical dictionary
musculi anorectoperineales — [TA] anorectoperineal muscles: bands of smooth muscle fibers extending from the perineal flexure of the rectum to the membranous urethra in the male. Called also musculi rectourethrales [TA alternative] … Medical dictionary
musculus puborectalis — [TA] puborectal muscle: a portion of the levator ani having a more lateral origin from the pubic bone, and continuous posteriorly with the corresponding muscle of the opposite side; innervation, third and fourth sacral; action, helps support… … Medical dictionary
Artery — A vessel that carries blood that is high in oxygen content away from the heart to the farthest reaches of the body. Since blood in arteries is usually full of oxygen, the hemoglobin in the red blood cells is oxygenated. The resultant form of… … Medical dictionary
Ligament — A ligament is a tough band of connective tissue that connects various structures such as two bones. Ligament is a fitting term; it comes from the Latin ligare meaning to bind or tie. * * * 1. A band or sheet of fibrous tissue connecting two or… … Medical dictionary
Nerve — A bundle of fibers that uses electrical and chemical signals to transmit sensory and motor information from one body part to another. See nervous system. * * * A whitish cordlike structure composed of one or more bundles (fascicles) of myelinated … Medical dictionary