otocyst

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otocyst

 [o´to-sist]
1. the auditory vesicle of the embryo.
2. the organ of hearing in certain animals.

o·to·cyst

(ō'tō-sist),
1. Embryonic otic vesicle.
2. A balancing organ, analogous to the utricle of mammals, possessed by certain invertebrates and containing grains of calcareous material or of sand.
[oto- + G. kystis, a bladder]

otocyst

(ō′tə-sĭst′)
n.
1. The structure formed by invagination of the embryonic ectodermal tissue that develops into the inner ear.
2. A statocyst.

o′to·cys′tic adj.

otocyst

The precursor, in the MESODERM of the head of the embryo, of the membranous LABYRINTH of the inner ear.

otocyst

an invertebrate organ, containing fluid and OTOLITHS, that is believed to have an auditory function.
References in periodicals archive ?
These characters are similar to mammalian otocyst (Morsli et al., 1998), suggesting a conserved morphogenesis of the otocyst among vertebrates.
Obviously, the otocyst is lined by a stratified epithelium and the epithelial invagination can be seen in the middle region of the otocyst (Fig.
These mesenchymal cells were also found in the mammalian otocyst in which the retinoic acid nuclear receptor genes are expressed (Romand et al., 2006).
Analysis of different types of migrating cells whether they express either Islet-1 or TuJ-1 in the organ-cultured otocyst needs further study.
A fate map of chick otic cup closure reveals lineage boundaries in the dorsal otocyst. Dev.
Morphological and physiological development of vestibular hair cells in the organ-cultured otocyst of the chick.
Schematic of isolation and culture of the chick otocyst (O, otocyst).
Morphology of the otic vesicle (OV) or otocyst of embryonic day 3, E3 (HH stage 19) embryo showing the endolymphatic duct (ED) locates at the dorsal aspect of the otocyst (D, dorsal; A, anterior).
High concentrations of RA further disrupt the pectoral fins, otocysts, forebrain, and posterior hindbrain structures (including cartilage).