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TLS Online TPP Program

#Id: 5925

Sequences that are involved with termination are called ter sites. A ter site contains a short, 23-bp sequence.

#Unit 3. Fundamental Processes #Mechanism of DNA synthesis in Prokaryotes #Part B Pointers
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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
TLS Online TPP Program

#Id: 4037

#Unit 7. System Physiology – Animal

Acetylcholine (ACh), released from parasympathetic nerve fibers, activates muscarinic (M2) receptors in the SA node.