When cellular iron concentrations return to normal levels, IRP1 is converted to aconitase, and IRP2 undergoes proteolytic degradation, ending the low-iron response.

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#Unit 7. System Physiology – Animal

The processes of the hair cells are bathed in endolymph, whereas their bases are bathed in perilymph, this arrangement is necessary for the normal production of

receptor potentials

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#Unit 7. System Physiology – Animal

Except in the cochlea, the kinocilium, is a true but nonmotile cilium with nine pairs of microtubules around its circumference and a central pair of microtubules. one of the largest processes and has a clubbed end. 

(The kinocilium is lost from the hair cells of the cochlea in adult mammals)

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#Unit 7. System Physiology – Animal

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#Unit 7. System Physiology – Animal

Stereocilia (all are the same height)

are present in all hair cells

have cores of actin filaments coated with isoforms

of myosin 

increase progressively in height; along the perpendicular axis

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#Unit 7. System Physiology – Animal

TLS Online TPP Program

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#Unit 7. System Physiology – Animal

Hair processes provide a mechanism for generating changes in membrane potential proportional to the

direction and distance the hair moves