The number of species should decrease with increasing distance of the island from the mainland - The species distance hypothesis

TLS Online TPP Program

#Id: 5462

#Unit 7. System Physiology – Animal

Neurotrophins 

Necessary for survival and growth of neurons

In the CNS produced by astrocytes

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#Id: 5463

#Unit 7. System Physiology – Animal

High affinity Neurotrophins  receptors

Tyrosine kinase associated (Trk) receptors 

TLS Online TPP Program

#Id: 5464

#Unit 7. System Physiology – Animal

Low-affinity NGF receptor

p75 NTR (also called NTR 5 neurotrophin receptor) 

TLS Online TPP Program

#Id: 5465

#Unit 7. System Physiology – Animal

p75 NTR forms heteromeric complexes with the different Trk receptors and enhances Trk receptor signaling

TLS Online TPP Program

#Id: 5466

#Unit 7. System Physiology – Animal

Schwann cells and astrocytes produce ciliary neurotrophic factor which promotes the survival of damaged and embryonic spinal cord neurons

TLS Online TPP Program

#Id: 5467

#Unit 7. System Physiology – Animal

A synapse is a site where information is transmitted from one cell to another. 

Types of synapses:

1. electrical synapse

2. chemical synapse