TLS Online TPP Program

#Id: 5646

#Unit 7. System Physiology – Animal

When light strikes the outer segment of Rod cells: 

Na + channels closed 

Hyperpolarizing receptor potential

TLS Online TPP Program

#Id: 5647

#Unit 7. System Physiology – Animal

The hyperpolarization of rod cells:

Reduces the release of glutamate

Generates a signal in the bipolar cells

Leads to AP in ganglion cells 

TLS Online TPP Program

#Id: 5648

#Unit 7. System Physiology – Animal

Retinal ganglion cells contain melanopsin.

TLS Online TPP Program

#Id: 5649

#Unit 7. System Physiology – Animal

Types of retinal ganglion cells:

large ganglion cells (magno, or M cells)

small ganglion cells (parvo, or P cells)

TLS Online TPP Program

#Id: 5650

#Unit 7. System Physiology – Animal

A lesion that interrupts one optic nerve causes blindness in that eye.

TLS Online TPP Program

#Id: 5651

#Unit 7. System Physiology – Animal

Homonymous (same side of both 

visual fields) Hemianopia (half blindness)

A lesion in one optic tract causes blindness in half of the visual field