The fundamental reaction is conversion of the soluble plasma protein fibrinogen to insoluble fibrin.

TLS Online TPP Program

#Id: 1181

#Unit 7. System Physiology – Animal

Rhodopsin is comprised of: 

  Retinal (an aldehyde of vitamin A)

  Opsin protein (GPCR)

TLS Online TPP Program

#Id: 1182

#Unit 7. System Physiology – Animal

Retinal is parallel to the surface of the membrane and is attached to a lysine residue at position 296 in the seventh transmembrane domain.

TLS Online TPP Program

#Id: 1183

#Unit 7. System Physiology – Animal

Neurotransmitter release from the rods of retina- Glutamate

TLS Online TPP Program

#Id: 1184

#Unit 7. System Physiology – Animal

When light strikes the outer segment of Rod cells: 

Na + channels closed 

Hyperpolarizing receptor potential

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#Id: 1185

#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: 1186

#Unit 7. System Physiology – Animal

Retinal ganglion cells contain melanopsin.