Allogenic factors –  Chemical weathering of rocks or filling in by sand/silt in a pond

Autogenic factors– Autogenic factors include – Immigration, Growth, Reaction, Coactions

TLS Online TPP Program

#Id: 5423

#Unit 7. System Physiology – Animal

Pseudo-unipolar cells develops, a single process splits into two, both of which function as axons one going to skin or muscle and another to the spinal cord.

TLS Online TPP Program

#Id: 5424

#Unit 7. System Physiology – Animal

Multipolar cells have one axon and many dendrites.

Motor neurons

Hippocampal pyramidal cells with dendrites in the apex and base

Cerebellum Purkinje cells with an extensive dendritic tree in a single plane

TLS Online TPP Program

#Id: 5425

#Unit 7. System Physiology – Animal

In the peripheral nervous system, myelin is compacted when the extracellular portions of a membrane protein called protein zero (P0 ) lock to the extracellular portions of P0 in the apposing membrane

TLS Online TPP Program

#Id: 5426

#Unit 7. System Physiology – Animal

In the CNS of mammals, most neurons are myelinated, but the cells that form the myelin are oligodendrocytes rather than Schwann cells

TLS Online TPP Program

#Id: 5427

#Unit 7. System Physiology – Animal

In multiple sclerosis, a crippling autoimmune disease, patchy destruction of myelin occurs in the CNS

TLS Online TPP Program

#Id: 5428

#Unit 7. System Physiology – Animal

Orthograde transport

moves from the cell body toward the axon terminals 

occurs along microtubules that run along the length of the axon and requires dynein and kinesin