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TLS Online TPP Program

#Id: 9560

They supposed that such mutant forms constituted new species and thus believed that natural selection was not necessary to account for the origin of species. The last influential mutationist was Richard Goldschmidt

#Unit 11. Evolution and Behavior #Emergence of evolutionary thoughts #Part B Pointers
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TLS Online TPP Program

#Id: 4025

#Unit 7. System Physiology – Animal

Large quantities of positive potassium ions diffuse out of the SA node.
TLS Online TPP Program

#Id: 4026

#Unit 7. System Physiology – Animal

Potassium channels remain open for another few tenths of a second, with resultant excess negativity inside the fiber; this process is called hyperpolarization.
TLS Online TPP Program

#Id: 4027

#Unit 7. System Physiology – Animal
TLS Online TPP Program

#Id: 4028

#Unit 7. System Physiology – Animal
TLS Online TPP Program

#Id: 4029

#Unit 7. System Physiology – Animal

The effects of the autonomic nervous system on heart rate are called chronotropic effects
TLS Online TPP Program

#Id: 4030

#Unit 7. System Physiology – Animal

Positive chronotropic effects are increases in heart rate.