Mcq Subject: Physiology

leksell efferents go to

A. Interneurons

B. Spindle

C. Golgi tendon organ

D. Golgi bottle cells

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Cell membrane of a cell is freely permeable to three ions X, Y and Z. At resting membrane potential, the respective equilibrium potentials of Xand Y are -30mV and -40 mV.What will happen to the membrane potential if a drug is infused which can block the permeability of Z?

A. Depolarisation

B. Hyperpolarization

C. No change

D. Hyperpolarization following repolarization

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Characteristic feature true about outer membrane of peripheral nerve

A. Relative permeable to sodium ions

B. Relative permeable to potassium ions

C. Permeable to chloride ions

D. Impermeable to potassium ions

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Detachment of myosin head from actin is caused by?

A. Entry of calcium into sarcoplasmic reticulum

B. Change in troponin C configuration

C. Binding of ATP

D. Release of ADP and Pi

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myasthenia gravis is a disorder of

A. Peripheral nerve

B. Spinal cord

C. Motor neuron

D. Neuromuscular junction

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Which of the following is not a general compartment of body fluid ?

A. Peritoneal

B. Intracellular

C. Interstitial

D. Blood plasma

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Which of the following hea sound may be a normal finding during pregnancy?

A. Fixed splitting of S2

B. S3

C. S4

D. Pericardial knock

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Electromyography is used to:

A. To study muscle activity

B. Determine class II malocclusion

C. Determine the centric relation

D. Determine the centric occlusion

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A patient inhales a tidal volume of 500 mL. The intrapleural pressure was measured as – 4 cm of water before inspiration and – 9 cm of water after inspiration. Calculate the pulmonary compliance in this patient:

A. 0.1 L/cm

B. 0.3 L/cm

C. 0.2 L/cm

D. 0.4 L cm

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Enzymes, which play an important role in calcification, are:

A. Enolase and Calcitonin

B. Alkaline phosphatase and catalase

C. Alkaline phosphatase and pyrophosphatase

D. Pyrophosphatase and carbonic anhydrase

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