Chapter·PhysiologyMolecular Physiology

Molecular Basis of ExcitabilityDownloads

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1

Assertion: RMP depends on proteins and phosphate ions. Reason: Diffusion potential can be calculated using nernst equation. Choose the best statement regarding the assertion and reason.

AAssertion false, Reason true

BBoth true, Reason is the explanation of assertion

CAssertion true, Reason false

DBoth true, Reason is not the explanation of assertion

2

Sequence the events in neuromuscular action potential conduction: 1. Sodium channels open in the end plate 2. Calcium enters at the nerve terminal 3. Release of acetylcholine

A$1 \rightarrow 2 \rightarrow 3$

B$1 \rightarrow 3 \rightarrow 2$

C$3 \rightarrow 2 \rightarrow 1$

D$2 \rightarrow 3 \rightarrow 1$

3

Which of the following statements about the Na-K pump is false?

AIt is not directly involved in the generation of action potentials.

BIt is electrogenic

CIt needs ATP for its functioning

DIt is located on the apical membrane of cell

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