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vestibule
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The hair cells of the utricle and saccule are clustered in?
ln the saccule and utricle, hair cells cluster within maculae, where their cilia contact the otolith (densely packed mineral crystals, called statoconia, in a matrix)
What 4 parts of the ear function in static equilibrium?
Saccule, otoliths, utricle, and semicircular ducts.
What is the effect of rotation on the endolymph in utricle saccule and cochlea?
makes you feel like your spinning. if your not moving but the fluid is then the sensation of spinning still occurs.
What part of the inner ear is involved in perceiving static balance?
The part which is responsible for dynamic balance is the semicircular canals while the one responsible for static balance is the vestibule, which is primarily composed of saccule and utricle.
What do the utricle do?
Also called the utriculus, a dilated portion of the membranous labyrinth within thee inner ear. It occupies the central part of the bony labyrinth, with the cochlea in front and the semicircular canals, which arise from the utricle, behind.Within the utricle a small projection, known as the macula, is raised from the epithelium inside the membranous labyrinth. It consists of a group of supporting cells, among which are arranged a number of hair cells. Each hair cell has a fine hair process, which extends from the end of the cell into the cavity of the utricle. These hairs are embedded in a jelly-like material, which contains a large number of calcareous bodies known as otoliths.The hair cells of the macula are attached to the nervous system by fibers of the vestibular division of the auditory nerve, each cell being served by one fiber.Next to the utricle is a very similar organ called the saccule. It is also is provided with a macula, like the utricle.Function of the utricleThe otoliths in the utricle are subject to the action of gravity, and since they are in contact with the hairs of the hair cells the gravitational pull upon them is transmitted to the macula. Furthermore, since gravity always pulls the otoliths towards the center of the earth, a change in the position of the head, and therefore of the utricle, alters the direction in which the otoliths pull in relation to the macula. As a result the stimulus to the hair cells changes, and a different sequence of nerve impulses passes along the vestibular division to the brain.In this way the utricle continually reports the position of the head. This information, when associated with information from the muscles, is enough to indicate the position of the body as a whole. Thus even a blindfold person knows the exact position in space of each part of her body.
What sacs found within the vestibule?
The saccule and utricle
What are sites of the maculae?
Utricle in vestible and saccule in vestibule.
What are the function of vestibules?
The vestibule contains the sense organs responsible for balance, the utricle and saccule.
Where are the saccule and utricle located?
The saccule and utricle are parts of the inner ear. They're in the bony labyrinth of the vestibule.
What are the sacs found in the vestibule?
The utricle and the saccule
What is the function of vestibules?
The vestibule contains the sense organs responsible for balance, the utricle & saccule.
What is the location of the receptors that respond to gravity?
utricle and saccule
What site of the maculae?
Utricle in vestible and saccule in vestibule.
The hair cells of the utricle and saccule are clustered in?
ln the saccule and utricle, hair cells cluster within maculae, where their cilia contact the otolith (densely packed mineral crystals, called statoconia, in a matrix)
Do the utricle and saccule contain the sensory receptors that are associated with the sense of dynamic equilibrium?
NO
What part of the ear is involved in monitoring the position of the head?
The macula in the utricle and saccule.
What is the difference between the utricle and saccule in the ear?
They both provide information about changes in velocity when travelling either horizontally or vertically. However, the utricle is more sensitive to horizontal acceleration , whereas the saccule is more sensitive to vertical acceleration.
