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TLS Online TPP Program

#Id: 2374

An anterior-to-posterior gradient of Erk signaling functions as a positive inducer of head specification


#Unit 5. Developmental Biology #Regeneration in Vertebrates #Part B Pointers
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TLS Online TPP Program

#Id: 5481

#Unit 7. System Physiology – Animal

ACh diffuses across the synaptic cleft to the postsynaptic Membrane of motor end plate, which contains nicotinic receptors
TLS Online TPP Program

#Id: 5482

#Unit 7. System Physiology – Animal

The nicotinic receptor for ACh is an example of a ligand-gated ion channel
TLS Online TPP Program

#Id: 5483

#Unit 7. System Physiology – Animal

ACh is degraded to choline and acetate by acetylcholinesterase (AChE) on the motor end plate
TLS Online TPP Program

#Id: 5484

#Unit 7. System Physiology – Animal

Approximately 50% of the choline is returned to the presynaptic terminal by Na+-choline cotransport
TLS Online TPP Program

#Id: 1172

#Unit 7. System Physiology – Animal

The sensory receptors for vision are photoreceptors, located on the retina.
TLS Online TPP Program

#Id: 1173

#Unit 7. System Physiology – Animal

There are two types of photoreceptors:
Rods 
Cones