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Sensory Receptors of the Vestibular System

by Craig Canby, PhD
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    00:00 Welcome to this presentation on the vestibular system. The first thing that I want you to understand is the sensory receptors that are associated with the vestibular system, the system that keeps us in balance and equilibrium. We’ll go through the location of these sensory receptors. Then it’s important for you also to understand the functional considerations of these receptors. First up is the macula.

    00:34 This is found in the utricle and the saccule. The purpose of the macula is to keep the head in a correct position relative to gravity. The utricle, we see in this particular area. The macula in this region is oriented vertically.

    00:58 So it’s going to detect linear acceleration in a vertical direction, whereas the saccule which is shown right in through here, this is going to have the macula oriented in a horizontal position. So this will detect linear acceleration.

    01:19 Another structure to consider as a sensory receptor is that of the crista ampullaris. The crista ampullaris is associated with the semicircular ducts. We see them outlined in through here. There are three of them.

    01:37 Here is one, two and, then three and they are oriented in three different planes. The crista ampullaris associated with each semicircular duct is going to detect angular acceleration movements of the head.


    About the Lecture

    The lecture Sensory Receptors of the Vestibular System by Craig Canby, PhD is from the course Auditory System and Vestibular System.


    Included Quiz Questions

    1. Oriented vertically and detects linear acceleration.
    2. Oriented horizontally and detects horizontal acceleration.
    3. Oriented horizontally and detects linear acceleration.
    4. Oriented vertically and detects vertical acceleration.
    5. Oriented horizontally and detects vertical acceleration.
    1. Detect angular acceleration movements of the head
    2. Adjust head position relative to the gravity
    3. Detects linear acceleration and head tilts in horizontal plane
    4. Gathers information about linear movement in vertical plane
    5. Maintain the balance of the entire body

    Author of lecture Sensory Receptors of the Vestibular System

     Craig Canby, PhD

    Craig Canby, PhD


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