Nerve and Muscle Physiology Practice Questions

Question 1

The activation of muscarinic receptors in bronchiolar smooth muscle is associated with:

Accepted Answer

Increase in IP3 and DAG

Answer

Inhibition of protein kinase C

Answer

Activation of adenylyl cyclase

Answer

Opening of Na+/K+ cation channels

Question 2

Which of the following statements is true regarding smooth muscle contraction?

Accepted Answer

Phosphorylation of myosin is essential for contraction.

Answer

None of the options.

Answer

Calmodulin plays no role in smooth muscle contraction.

Answer

Troponin plays a significant role in smooth muscle contraction.

Question 3

Absolute refractoriness of a neuron is due to?

Accepted Answer

Inactivation of Na channels

Answer

Hyperpolarization of Cl channels

Answer

Opening of rectifier K+ channels

Answer

Closure of activated Na channels

Question 4

Competitive neuromuscular blockade is enhanced by all except

Accepted Answer

Hypercalcemia

Answer

Acidosis

Answer

Aminoglycosides

Answer

Hypermagnesemia

Question 5

The electromyogram (EMG) is least useful for the diagnosis of:

Accepted Answer

Cerebral palsy

Answer

Myasthenia gravis

Answer

Charcot-Marie-Tooth disease

Answer

Spinal muscular atrophy

Question 6

What is the classification of intelligence corresponding to an IQ score of 90-109?

Accepted Answer

Average

Answer

Below average

Answer

Slightly below average

Answer

Above average

Question 7

What is the physiological condition in which the ratio of potassium permeability to sodium permeability (PK/PNa) is maximized?

Accepted Answer

Hyperpolarization

Answer

Depolarization

Answer

Action Potential

Answer

Resting Membrane Potential

Question 8

Upstroke of the action potential would lead to:

Accepted Answer

All of the options

Answer

Cell interior becomes less negative

Answer

Net current in an inward direction

Answer

Cell interior becomes more positive

Question 9

Steps in review of patient's history during secondary survey of trauma care can be summarised as

Accepted Answer

AMPLE

Answer

TRIAGE

Answer

ABCDE

Answer

None of the options

Question 10

A hyperventilating patient has the following ABG values: pH=7.53, pCO2=20 mmHg, HCO3= 26 mEq/L. What is the most likely diagnosis?

Accepted Answer

Respiratory alkalosis

Answer

Metabolic alkalosis

Answer

Metabolic acidosis

Answer

Respiratory acidosis

Nerve and Muscle Physiology

Study Resources

Lessons

Questions

Flashcards

Lessons

Resting Membrane Potential

Action Potential Generation and Propagation

Neuromuscular Junction

Skeletal Muscle Contraction

Smooth Muscle Physiology

Cardiac Muscle Properties

Muscle Metabolism and Fatigue

Motor Unit Function

Neurotransmitters and Receptors

Electrophysiological Measurements

Practice Questions

Flashcards

About Nerve and Muscle Physiology for NEET-PG

Lessons in Nerve and Muscle Physiology

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