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Physiology; Daily Free Online Mock Test 50

Author: RxPG, Posted on Sunday, August 03 @ 00:00:00 IST by RxPG  

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Physiology

Multiple Choice Test



1) Latch bridges are characteristic of :

One answer only.
a) Smooth muscle
b) Skeletal
c) Cardiac muscle
d) Skeletal and cardiac muscle





2) Maximum density of Na+ channels in a nerve is present at :

One answer only.
a) Initial segment
b) Nodes of Ranvier
c) Axon terminal
d) Myelinated segment of axon



3) Choline (at neuromuscular junction) from the myoneural cleft is taken up in the nerve terminal by :

One answer only.
a) Simple diffusion
b) Endocytosis
c) Na+ coupled secondary active transport
d) Facilitated diffusion



4) pH of glomerular filtrate as it enters PCT is :

One answer only.
a) 7.4
b) 6.4
c) 4.5
d) 8.4



5) Limiting H+ concentration of urine in how many times the H+ concentration of plasma ?

One answer only.
a) 100
b) 4.5
c) 1000
d) 7.4



6) The correct sequence regarding the toxicity of tubular fluid from PCT to Descending limb of Henle's loop to Ascending limb of Henle's loop is :

One answer only.
a) Isotonic to Hypotonic to Hypertonic
b) Isotonic to Hypertonic to Isotonic / Hypotonic
c) Isotonic to Isotonic to Hypertonic
d) Isotonic to Isotonic to Hypotonic



7) The part of the nephron least permeable to water is :

One answer only.
a) PCT
b) Descending limb of loop of Henle
c) Ascending limb of loop of Henle
d) Collecting ducts



8) A decrease in ECF volume will :

One answer only.
a) Increase GFR
b) Increase angiotensin II levels
c) Increase ANP levels
d) Increase free water clearance
e) Increase fractional excretion of Na+



9) Which of the following manoeuvres would be expected to stimulate ADH secretion ?

One answer only.
a) Infusion of 1 litre of hypertonic NaCl
b) Infusion of 1 litre of an isosmotic urea solution
c) Expansion of ECF
d) Infusion of 1 litre of 5% dextrose in water
e) An acute increase in B.P.



10) A reduction in dietary intake of K+ would be expected to alter K+ transport in which segment of the nephron ?

One answer only.
a) PCT
b) Descending limb of Henle
c) Proximal straight tubule
d) Collecting duct
e) Thick ascending limb of Henle


This test has been created by RxPG




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