GTP-binding site on the β-subunit is at the surface of the dimer and GTP bound by the β-subunit can be hydrolyzed.

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

TLS Online TPP Program

#Id: 5673

#Unit 7. System Physiology – Animal

The resting membrane potential of the hair cells is about

–60 mV. 

TLS Online TPP Program

#Id: 5674

#Unit 7. System Physiology – Animal

Vibration of the organ of Corti causes bending of stereocilia on the hair cells by a shearing force as the cilia push against the tectorial membrane