Mcq Subject: Physiology

The temperature of body is controlled by:

A. Medulla

B. Precentral gyrus

C. Diencephalon

D. Hypothalamus

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X,Y,Z are the ee ions pet meaule..\ and V=-30. If at resting membrane potential (RMP), when there is no net electro genic transfer, what is the value of Z?

A. 20

B. -20

C. 80

D. -80

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Which of the following methods is used for calculation of anatomical dead space?

A. Xenon dilution technique

B. Bohler's method

C. Spirometry

D. Single breath nitrogen test

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Which of following causes lysis of clot :

A. Fibrin

B. Plasmin

C. Hyaluronidase

D. Coagulase

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If sodium channel inactivation is prolonged then which property of nerve conduction is hampered?

A. Decreased relative refractory period

B. Increased conduction blockade

C. Increased upward stroke velocity

D. Decreased downward stroke velocity of refractory period.

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GFR is increased by all except?

A. Increased renal blood flow

B. Efferent aeriole constriction

C. Renal stone in ureter

D. Decreased oncotic pressure

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In the formula for urea clearance, C = U x V/P, what does U stands for:

A. Urinary concentration in g/24 hour

B. Urinary concentration in mg/ml

C. Urine osmolarity

D. Urine volume per minute

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The cell junctions allowing exchange of cytoplasmic molecules between two cells are called:

A. Gap junctions

B. Tight junctions

C. Anchoring junctions

D. Focal junctions

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All of the following increases calcium absorption from the gut except

A. Phytates

B. Vitamin D

C. Alkaline pH in the gut

D. Protein in diet

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What is the rise of blood flow if the radius of blood vessels is increased by 50%?

A. 5 times

B. 10 times

C. 20 times

D. 100 times

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