urethral lacuna


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u·re·thral la·cu·na

[TA]
one of a number of small recesses in the mucous membrane of the spongy urethra into which the ducts of the urethral glands empty.

Morgagni,

Giovanni Battista, Italian anatomist and pathologist, 1682-1771.
frenulum of Morgagni - a fold running from the junction of the two commissures of the ileocecal valve on either side along the inner wall of the cecocolic junction. Synonym(s): frenulum of ileocecal valve; Morgagni frenum; Morgagni retinaculum
Morgagni appendix - an inconstant narrow lobe of the thyroid gland. Synonym(s): pyramidal lobe of thyroid gland
Morgagni cartilage - a small nonarticulating rod of elastic cartilage in the aryepiglottic fold anterolateral and somewhat superior to the corniculate cartilage. Synonym(s): cuneiform cartilage; Morgagni tubercle
Morgagni caruncle - middle lobe of prostate.
Morgagni cataract - a hypermature cataract in which the nucleus gravitates within the capsule. Synonym(s): sedimentary cataract
Morgagni columns - a number of vertical ridges in the mucous membrane of the upper half of the anal canal. Synonym(s): anal columns
Morgagni concha - the upper thin, spongy, bony plate projecting from the lateral wall of the nasal cavity, separating the superior meatus from the sphenoethmoidal recess. Synonym(s): superior nasal concha
Morgagni crypts - the grooves between the anal columns. Synonym(s): anal sinuses
Morgagni disease - Synonym(s): Adams-Stokes syndrome
Morgagni foramen - congenital defect in the fusion of sternal and costal elements of the diaphragmatic anlage that is the site of a parasternal hernia. Synonym(s): foramen cecum of tongue
Morgagni fossa - the terminal dilated portion of the urethra in the glans penis. Synonym(s): Morgagni fovea; navicular fossa of the urethra
Morgagni fovea - Synonym(s): Morgagni fossa
Morgagni frenum - Synonym(s): frenulum of Morgagni
Morgagni globules - vesicles beneath the capsule and between lens fibers in an early cataract. Synonym(s): Morgagni spheres
Morgagni hernia
Morgagni humor - Synonym(s): Morgagni liquor
Morgagni hydatid - a vestigial remnant of the embryonic mesonephric duct. Synonym(s): vesicular appendices of uterine tube
Morgagni 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(s): urethral lacuna
Morgagni liquor - a fluid found postmortem between the epithelium and the fibers of the lens, resulting from the liquefaction of a semifluid material existing there during life. Synonym(s): Morgagni humor
Morgagni nodule - a nodule at the center of the free border of each semilunar valve at the beginning of the pulmonary artery and aorta. Synonym(s): nodule of semilunar valve
Morgagni prolapse - chronic inflammation of laryngeal ventricle.
Morgagni retinaculum - Synonym(s): frenulum of Morgagni
Morgagni sinus - Synonym(s): anal sinuses; laryngeal ventricle; prostatic utricle
Morgagni spheres - Synonym(s): Morgagni globules
Morgagni syndrome - hyperostosis frontalis interna in elderly women, with obesity and neuropsychiatric disorders. Synonym(s): metabolic craniopathy; Stewart-Morel syndrome
Morgagni tubercle - Synonym(s): Morgagni cartilage
Morgagni valves - delicate crescent-shaped mucosal folds that pass between the lower ends of neighboring anal columns. Synonym(s): anal valves
Morgagni ventricle - the recess in each lateral wall of the larynx between the vestibular and vocal folds and into which the laryngeal sacculus opens. Synonym(s): laryngeal ventricle
Morgagni-Adams-Stokes syndrome - Synonym(s): Adams-Stokes syndrome
morgagnian cyst - a vestigial remnant of the embryonic mesonephric duct. Synonym(s): vesicular appendices of uterine tube

lacuna

pl. lacunae [L.]
1. a small pit or hollow cavity.
2. a defect or gap, as in the field of vision (scotoma).

absorption lacuna
a pit or groove in developing bone that is undergoing resorption; frequently found to contain osteoclasts.
bone lacuna
a small cavity within the bone matrix, containing an osteocyte, and from which slender canaliculi radiate and penetrate the adjacent lamellae to anastomose with the canaliculi of neighboring lacunae, thus forming a system of cavities interconnected by minute canals.
cartilage lacuna
any of the small cavities within the cartilage matrix, containing a chondrocyte.
Howship's lacuna
the concave cavities which are formed by osteoclasts in the process of bone resorption.
osseous lacuna
bone lacuna (see above).
osteocytic lacuna
see bone lacuna (above).
urethral lacuna
numerous small depressions or pits in the mucous membrane of the urethra.
vascular lacuna
a breach in any membrane or other tissue which is navigated by blood vessels.