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What is the movement of the cupula during rotational acceleration and deceleration?
During rotational acceleration, the cupula moves in the opposite direction of head rotation due to inertia, causing the hair cells to bend and trigger a signal to the brain indicating movement. During deceleration, the cupula moves in the direction of head rotation, also activating the hair cells to signal changes in movement.
Why you feel that some fluid is moving in your head?
yeah...its probably blood
Why is a baby's head ballotable?
Ballotable, or ballottable in reference to the head of a fetus means that it can be felt moving around in the amniotic fluid.
What is the role of the emdolymph of the semicircular canals in activating the receptors during angular motion?
Each canal is filled with a fluid called endolymph and contains a motion sensor with little hairs (cilia) whose ends are embedded in a gelatinous structure called the cupula. As the skull twists in any direction, the endolymph is thrown into different sections of the canals. The cilia detect when the endolymph rushes past, and a signal is then sent to the brain.
What is the function of the ampulla into the ear?
The three semicircular canals (SSCs) within the vestibular organ of each ear contain fluid and hair receptor cells encased inside a fragile membrane called the cupula. The cupula is located in a widened area of each canal called the ampulla. When you move your head, the fluid in the ampulla lags behind, pushing the cupula a very tiny bit which causes the hairs to also bend a very tiny bit. The bending hairs stimulate the hair cells, which in turn trigger sensory impulses in the vestibular nerve going to the brain to "report" the movement. Hair cells are amazingly sensitive. For example, a cupula movement of even a thousandth of an inch is detected by the brain as a big stimulus. The three canals are positioned roughly at right angles to one another in the three planes of space. Thus, the canals react separately and in combination to detect different types of swiveling head movement. They detect when we nod in an up and down motion (pitch), when we tilt our head to the side towards our shoulder (roll), and when we shake our head "no" in a side to side motion (yaw). The semicircular canals are responsible for detecting any kind of rotational motion in the head.
How do movements stimulate the hair cells in the vestibular system?
The hair cells have a special type of ion channel that is gated by mechanical deformation. Depending on which way the hair cell bends, the neuron will either become hyperpolarised or depolarised. Deformation of the hair cells is caused by two separate mechanisms depending on which part of the vestibular system is in question. For the semicircular canals (SCCs) - these are filled with a fluid, such that when the head moves, the fluid momentarily lags behind exerting pressure on a membrane called a cupula. At its base are hair cells that project up into the cupula. When the cupula is deflected, so are the hair cells. The second component is the otolithic organs. These consist of a flat, top heavy bed of tissue with hair cells at their base. When the head moves up/down or side-to-side, the tissue (otolithic membrane) momentarily lags behind and the hair cells are deformed. In both cases the transduction is mechanical -> electrical; but whereas the SCCs rely on fluid movement for the mechanical force, the otoliths don't.
Brake light head light dash light all started flickering turned key off then restarted and it quit what happened?
brake fluid
What is the meaning of head in fluid mechanics?
Head is the height of the fluid above the point you are measuring.
Only moving bone in your head?
The only moving bone in your head is the lower mandible, commonly referred to as the jaw.
Write a sentence using hogs head?
The hogs head turned and starred at me.
What is pump head unit?
Pump head unit; is either in Feets fluid- us unit or in meters fluid- metric units
Can a partial weave be turned into a full head?
yes
