TLS Online TPP Program

#Id: 5667

#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

TLS Online TPP Program

#Id: 5668

#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)

TLS Online TPP Program

#Id: 5669

#Unit 7. System Physiology – Animal

TLS Online TPP Program

#Id: 5670

#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

TLS Online TPP Program

#Id: 5671

#Unit 7. System Physiology – Animal

TLS Online TPP Program

#Id: 5672

#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