| pars cavernosa | 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) |
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| pars cavernosa arteriae carotidis internae | <anatomy, artery> The tortuous portion of the internal carotid artery located within the cavernous sinus; it has numerous small branches. Synonym: pars cavernosa arteriae carotidis internae. (05 Mar 2000) |
| caverns of corpora cavernosa | The vascular spaces of the corpora cavernosa that, together with the intervening fibrous trabeculae, form the erectile tissue of the penis or clitoris. Synonym: cavernae corporum cavernosorum, cavities of corpora cavernosa. (05 Mar 2000) |
| cavities of corpora cavernosa | The vascular spaces of the corpora cavernosa that, together with the intervening fibrous trabeculae, form the erectile tissue of the penis or clitoris. Synonym: cavernae corporum cavernosorum, cavities of corpora cavernosa. (05 Mar 2000) |
| corpora cavernosa | Two chambers in the penis which run the length of the organ and are filled with spongy tissue. Blood flows in and fills the open spaces in the spongy tissue to create an erection. (12 Dec 1998) |
| trabeculae of corpora cavernosa | Fibromuscular bands and cords given off from the fibrous envelopes and septum of the corpora cavernosa penis and that separate the cavernous veins. Synonym: trabeculae corporum cavernosorum. (05 Mar 2000) |
| vascular lacuna | <anatomy> The medial compartment beneath the inguinal ligament, for the passage to the femoral vessels; it is separated from the muscular lacuna by the iliopectineal arch. Synonym: lacuna vasorum. (05 Mar 2000) |
| cartilage lacuna | A cavity within the matrix of cartilage, occupied by a chondrocyte. Synonym: cartilage space. (05 Mar 2000) |
| cerebral lacuna | A small circumscribed loss of brain tissue caused by occlusion of one of the small penetrating arteries. Synonym: lacuna cerebri. (05 Mar 2000) |
| Morgagni's lacuna | One of a number of little recesses in the mucous membrane of the spongy urethra into which empty the ducts of the urethral glands. Synonym: lacuna urethralis, Morgagni's lacuna. (05 Mar 2000) |
| muscular lacuna | The lateral compartment beneath the inguinal (Poupart's) ligament, for the passage of the iliopsoas muscle and femoral nerve; it is separated by the iliopectineal arch from the vascular lacuna. Synonym: lacuna musculorum. (05 Mar 2000) |
| intervillous lacuna | One of the blood spaces in the placenta into which the chorionic villi project. (05 Mar 2000) |
| osseous lacuna | A cavity in bony tissue occupied by an osteocyte. (05 Mar 2000) |
| trophoblastic lacuna | One of the spaces in the early syncytiotrophoblastic layer of the chorion before the formation of villi; in human embryos maternal blood enters these spaces by the 10th day; with the differentiation of the chorionic villi they become intervillous spaces, sometimes called intervillous lacunae. (05 Mar 2000) |
| urethral lacuna | One of a number of little recesses in the mucous membrane of the spongy urethra into which empty the ducts of the urethral glands. Synonym: lacuna urethralis, Morgagni's lacuna. (05 Mar 2000) |
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