| pterygopharyngeal part of superior constrictor muscle of pharynx | pterygopharyngeal part of superior constrictor muscle of pharynx |
|---|---|
| sphincter constrictor cardiae | A sphincter supposedly present at the oesophagogastric junction; this is in fact an extrinsic sphincter formed by the surrounding musculature of the oesophageal hiagus of the right crus of the diaphragm; causes a normally-occuring constriction at the oesophagogastric junction observable with a barium swallow. Synonym: sphincter constrictor cardiae. (05 Mar 2000) |
| superior constrictor muscle of pharynx | Origin, medial pterygoid plate (pterygopharyngeal part), pterygomandibular raphe (buccopharyngeal part), mylohyoid line of mandible (mylopharyngeal part), and the mucous membrane of the floor of the mouth and the side of the tongue (glossopharyngeal part); insertion, pharyngeal raphe in the posterior wall of the pharynx; action, narrows pharynx; nerve supply, pharyngeal plexus. Synonym: musculus constrictor pharyngis superior, musculus cephalopharyngeus. (05 Mar 2000) |
| inferior constrictor muscle of pharynx | Origin, outer surfaces of thyroid (thyropharyngeal part) and cricoid (cricopharyngeal part, musculus cricopharyngeus; superior or upper oesophageal sphincter muscle) cartilages; insertion, pharyngeal raphe in the posterior portion of wall of pharynx; action, narrows lower part of pharynx in swallowing, the cricopharyngeal part has a sphincteric function for the oesophagus, allowing some voluntary control of eructation and reflux; nerve supply, pharyngeal plexus. Synonym: musculus constrictor pharyngis inferior, cricopharyngeus muscle, laryngopharyngeus, musculus laryngopharyngeus. (05 Mar 2000) |
| thyropharyngeal part of inferior pharyngeal constrictor muscle | thyropharyngeal part of inferior pharyngeal constrictor muscle |
| arteria bulbi urethrae | A branch of the internal pudendal artery which supplies the bulb of the penis including the bulbar urethra. Synonym: arteria bulbi penis, arteria bulbi urethrae. (05 Mar 2000) |
| bulbus urethrae | The expanded posterior part of the corpus spongiosum of the penis lying in the interval between the crura of the penis. Synonym: bulbus penis, bulb of corpus spongiosum, bulb of urethra, bulbus urethrae. (05 Mar 2000) |
| pars membranacea urethrae masculinae | The portion of the male urethra, about 1 cm in length, extending from the prostate to the beginning of the urethra in the corpus spongiosum just beyond the bulb. Synonym: pars membranacea urethrae masculinae, membranous urethra. (05 Mar 2000) |
| pars prostatica urethrae | The prostatic part of the male urethra, about 2.5 cm in length, that traverses the prostate; it includes the seminal colliculus, and the ejaculatory and prostatic ducts open into it. Synonym: pars prostatica urethrae. (05 Mar 2000) |
| pars spongiosa urethrae masculinae | The portion of the male urethra, about 15 cm in length, which traverses the corpus spongiosum. Synonym: pars spongiosa urethrae masculinae, pars cavernosa, penile urethra, spongy part of the male urethra. (05 Mar 2000) |
| corpus cavernosum urethrae | The median column of erectile tissue located between and ventral to the two corpora cavernosa penis; posteriorly it expands into the bulbus penis and anteriorly it terminates as the enlarged glans penis; it is traversed by the urethra. Synonym: corpus cavernosum urethrae, spongy body of penis. Corpus spongiosum urethrae muliebris, the submucous coat of the female urethra, containing a venous network that insinuates itself between the muscular layers, giving to them an erectile nature. (05 Mar 2000) |
| hemispherium bulbi urethrae | One of the lateral halves of the bulb of the penis that are separated by a median groove on the posterior part of the undersurface. Synonym: hemispherium bulbi urethrae. (05 Mar 2000) |
| septum bulbi urethrae | A fibrous septum in the interior of the bulb of the penis which divides it into two hemispheres. (05 Mar 2000) |
| sphincter urethrae | Origin, ramus of pubis; insertion, with fellow in median raphe behind and in front of urethra; action, constricts membranous urethra; nerve supply, pudendal. Synonym: musculus sphincter urethrae, external urethral sphincter, Guthrie's muscle, musculus compressor urethrae, musculus constrictor urethrae, musculus sphincter urethrae membranaceae, sphincter muscle of urethra, Wilson's muscle. (05 Mar 2000) |
| orificium urethrae externum | The slitlike opening of the urethra in the glans penis, the external orifice of the urethra (in the female) in the vestibule, usually upon a slight elevation, the papilla urethrae. Synonym: ostium urethrae externum, external opening of urethra, meatus urinarius, orificium urethrae externum. (05 Mar 2000) |