What is the difference between the bony labyrinth and the membranous labyrinth?
What is the difference between the bony labyrinth and the membranous labyrinth?
The bony labyrinth consists of the cochlea, an oval cavity called the vestibule, and the semicircular canals. The membranous labyrinth is contained within the bony labyrinth and consists of the utricle, the saccule, and the lateral, superior and posterior semicircular ducts.
What is the difference between the bony labyrinth and the membranous labyrinth quizlet?
The membranous labyrinth is a continuous series of membranous sacs and ducts filled with endolymph that contain the sensory receptors for hearing and equilibrium. The bony labyrinth is the cavity within the petrous portion of the temporal bone that surrounds the membranous labyrinth.
What is bony labyrinth?
The bony labyrinth (also osseous labyrinth or otic capsule) is the rigid, bony outer wall of the inner ear in the temporal bone. It consists of three parts: the vestibule, semicircular canals, and cochlea. These are cavities hollowed out of the substance of the bone, and lined by periosteum.
What is part of membranous labyrinth?
The component parts of the membranous labyrinth are the three semicircular ducts, each with a sense organ for rotational movement; the cochlear duct, with the sense organ for sound vibrations, and in the vestibule, the utricle and saccule, with their two sense organs for linear movement.
What is the role of membranous labyrinth?
The membranous labyrinth is a collection of fluid filled tubes and chambers which contain the receptors for the senses of equilibrium and hearing.
What are the two types of labyrinth?
There are actually two labyrinths of the inner ear, one inside the other, the membranous labyrinth contained within the bony labyrinth. The bony labyrinth consists of a central chamber called the vestibule, the three semicircular canals, and the spirally coiled cochlea.
What separates the membranous labyrinth from the bony labyrinth?
The membranous labyrinth is separated from the walls of the bony labyrinth by the perilymph fluid. The bony labyrinth is situated in the middle of the petrous face and can be divided into the anterior and posterior labyrinth. The anterior labyrinth is the organ of hearing composed of the cochlea and cochlear duct.
What fluid is between the bony and membranous labyrinths within the inner ear?
A liquid called perilymph, the properties of which closely resemble those of cerebrospinal fluid, flows between the bony and membranous labyrinths. Another fluid, called endolymph, is contained in the membranous labyrinth. The endolymph has concentrations of electrolytes that differ from those of typical body fluids.
Which cranial bone contains the bony labyrinth?
The bony labyrinth, a cavity in the temporal bone, is divided into three sections: the vestibule, the semicircular canals, and the cochlea. Within the bony labyrinth is a membranous labyrinth, which is also divided into three parts: the semicircular ducts; two saclike structures, the saccule and…
How is the membranous labyrinth divided?
Within the bony labyrinth is a membranous labyrinth, which is also divided into three parts: the semicircular ducts; two saclike structures, the saccule and utricle, located in the vestibule; and the cochlear duct, which is the only part of the inner ear involved in hearing.
What is the function of the membranous labyrinth?
Is bony labyrinth part of temporal bone?
The bony labyrinth, a cavity in the temporal bone, is divided into three sections: the vestibule, the semicircular canals, and the cochlea. The bony labyrinth consists of a central chamber called the vestibule, the three semicircular canals, and the spirally coiled cochlea.
What is the function of the bony labyrinth?
Gross Anatomy. The bony labyrinth can be subdivided into the vestibule, 3 semicircular canals, and the cochlea. The vestibule contains a pair of membranous sacs: the saccule (sacculus) and the utricle (utriculus). Receptors in the vestibule provide for sensations of gravity and linear acceleration.
What is osseous labyrinth?
• OSSEOUS LABYRINTH (noun) The noun OSSEOUS LABYRINTH has 1 sense: 1. cavity in the petrous part of the temporal bone that contains the membranous labyrinth. Familiarity information: OSSEOUS LABYRINTH used as a noun is very rare.
What is inner ear labyrinth?
The labyrinth of the inner ear contains the nerve endings of the vestibular nerve—the nerve of equilibrium —and the auditory nerve, which are branches of the vestibulocochlear, or eighth cranial, nerve. The vestibular nerve ends supply the semicircular canals and the otolithic membranes in the vestibule. The auditory nerve supplies the cochlea.
What is a Bone Labyrinth?
The bony labyrinth, a cavity in the temporal bone, is divided into three sections: the vestibule, the semicircular canals, and the cochlea. Within the bony labyrinth is a membranous labyrinth, which is also divided into three parts: the semicircular ducts; two saclike structures, the saccule and…
