Induction

Kind of interaction in which one group of cells changing the behavior of an adjacent set of cells, thereby causing them to change their shape, mitotic rate, or cell fate. 

TLS Online TPP Program

#Id: 4030

#Unit 7. System Physiology – Animal

Positive chronotropic effects are increases in heart rate.

TLS Online TPP Program

#Id: 4031

#Unit 7. System Physiology – Animal

Negative chronotropic effects are decreases in heart rate.

TLS Online TPP Program

#Id: 4032

#Unit 7. System Physiology – Animal

Stimulation of the sympathetic cardiac nerves speeds the depolarization in SA node.

TLS Online TPP Program

#Id: 4034

#Unit 7. System Physiology – Animal

The rate of spontaneous discharge increases Norepinephrine secreted by the sympathetic endings binds to β1 receptors

TLS Online TPP Program

#Id: 4035

#Unit 7. System Physiology – Animal

Increase in intracellular cAMP facilitates the opening of L channels, increasing ICa and the rapidity of the depolarization phase of the impulse.

TLS Online TPP Program

#Id: 4036

#Unit 7. System Physiology – Animal

When the cholinergic vagal fibers to nodal tissue are stimulated, the membrane becomes hyperpolarized and the slope of the prepotentials is decreased