endolymphatic sac

(redirected from Bottcher space)


a baglike organ or structure; see also bag, pocket, and pouch.
air s's (alveolar s's) the spaces into which the alveolar ducts open distally, and with which the alveoli communicate; see also lung.
amniotic sac the sac formed by the amnion, enclosing the fetus suspended in amniotic fluid; popularly known as the bag of waters.
conjunctival sac the potential space, lined by conjunctiva, between the eyelids and the eyeball.
endolymphatic sac the blind, flattened cerebral end of the endolymphatic duct.
hernial sac the peritoneal pouch that encloses protruding intestine.
lacrimal sac the dilated upper end of the nasolacrimal duct; see also lacrimal apparatus.
yolk sac the extraembryonic membrane connected with the midgut; in vertebrates below true mammals, it contains a yolk mass.
Yolk sac in a developing embryo. From Applegate, 2000.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

en·do·lym·phat·ic sac

the dilated blind extremity of the endolymphatic duct, which lies external to the dura on the posterior aspect of the petrous part of the temporal bone.
Farlex Partner Medical Dictionary © Farlex 2012

en·do·lym·phat·ic sac

(en'dō-lim-fat'ik sak) [TA]
The dilated blind extremity of the endolymphatic duct.
Synonym(s): saccus endolymphaticus [TA] , Böttcher space.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


Arthur, Estonian anatomist, 1831-1889.
Böttcher canal - a duct that connects the inner aspect of the utricle with the endolymphatic duct a short distance from its origin from the saccule. Synonym(s): utriculosaccular duct
Böttcher cells - cells of the basilar membrane of the cochlea.
Böttcher crystals - small crystals observed microscopically in prostatic fluid.
Böttcher ganglion - ganglion on the cochlear nerve in the internal acoustic meatus.
Böttcher space - the dilated blind extremity of the endolymphatic duct. Synonym(s): endolymphatic sac
Charcot-Böttcher crystalloids - see under Charcot


(Contugno), Domenico Felice Antonio, Italian anatomist, 1736-1822.
aqueductus cotunnii - a bony canal of the petrous portion of the temporal bone, giving passage to the endolymphatic duct and a small vein. Synonym(s): aqueduct of vestibule; Cotunnius aqueduct; Cotunnius canal
Cotunnius aqueduct - Synonym(s): aqueductus cotunnii
Cotunnius canal - Synonym(s): aqueductus cotunnii
Cotunnius disease - pain in the lower back and hip radiating down the back of the thigh into the leg now known to usually be due to herniated lumbar disk compromising the L5 or S1 root. Synonym(s): sciatica
Cotunnius liquid - the fluid contained within the osseus labyrinth. Synonym(s): liquor cotunnii; perilymph
Cotunnius space - the dilated blind extremity of the endolymphatic duct. Synonym(s): endolymphatic sac
liquor cotunnii - Synonym(s): Cotunnius liquid
Medical Eponyms © Farlex 2012

en·do·lym·phat·ic sac

(endō-lim-fatik sak) [TA]
Dilated blind extremity of endolymphatic duct, which lies external to the dura on posterior aspect of petrous part of temporal bone.
Medical Dictionary for the Dental Professions © Farlex 2012