Mcq Subject: Physiology
Relaxation of skeletal muscle occurs by
A. Removal of Acetylcholine from synaptic cleft
B. Closure of nicotinic cholinergic receptor
C. Binding of calcium with troponin
D. Removal of sarcoplasmic calcium
View DescriptionAll the following are examples of atrophy Except
A. Skeletal muscle, following transection of its motor neuron
B. Skeletal muscles, following long-term immobilization of the broken extremity in a cast
C. Ovary following hypophysectomy
D. Endometrium following long-term administration of estrogen
View DescriptionWhich of the following results in thirst
A. Cardiac failure
B. Decreased plasma levels of angiotensin II
C. Distension of the cardiac atria
D. Distension of the stomach
View DescriptionAll are factors determining diffusion across membrane except
A. Temperature
B. Particle size
C. Membrane pore size
D. Concentration gradient (Repeat, 2008)
View DescriptionGastro-colic reflex is related to :
A. Mass peristalsis
B. Segmental movement
C. Pendular movement
D. Colonic cases
View DescriptionThe mechanism responsible for sustained vascular smooth muscle contraction is
A. Sustained calcium release from SERCA pump
B. Vascular smooth muscle tone
C. Latch bridge mechanism
D. Henneman principle
View DescriptionSmooth muscle contraction due to release of calcium, occurs because of ?
A. Increased cAMP
B. Calcium combining with troponin C
C. Increased cGMP
D. Calmodulin-dependant myosin light chain kinase
View DescriptionFine voluntary movements are transmitted by
A. Lateral corticospinal tract
B. Dorsal column
C. Anterior horn
D. Spinothalamic tract
View DescriptionCell volume & shape is maintained by
A. Goldman effect
B. Gibbs - Donnan effect
C. Singer's effect
D. None
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