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Physiology
(Single Best Answer) Question 1: The following statements are true regarding the SA node except ?
A) Is located at the right border of the ascending aorta
B) It contains specialized nodal cardiac muscle
C) It is supplied by the atrial branches of the right coronary artery
D) It initiates cardiac conduction
Answer (Select an option above to get the answer):
(Single Best Answer) Question 2: In knee jerk at patellar tendon, deep tendon reflex is due to the stimulation of ?
A) Golgi tendon
B) Intra-fusal muscle fibres
C) Muscle spindle and Golgi tendon
D) Nuclear bag and chain fibre
Answer (Select an option above to get the answer):
(Single Best Answer) Question 3: Posterior column does not carry ?
A) Pressure
B) Fine Touch
C) Proprioception
D) Temperature
Answer (Select an option above to get the answer):
(Single Best Answer) Question 4: Which of the following is not a part of Countercurrent multiplier ?
A) Collecting tubule
B) Thin descending loop
C) Thick ascending loop
D) Vasa recta
Answer (Select an option above to get the answer):
(Single Best Answer) Question 5: Nerve endings sensitive to noxious substances are present in ?
A) Spleen
B) Intestine
C) Liver
D) Mesentry
Answer (Select an option above to get the answer):
(Single Best Answer) Question 6: All of the following transport processes follow 'saturation kinetics' except ?
A) Facilitated diffusion
B) Na+ - Ca+ exchanger
C) Simple diffusion
D) Na+ coupled active transport
Answer (Select an option above to get the answer):
(Single Best Answer) Question 7: According to myogenic hypothesis of renal autoregulation, the afferent arterioles contract in response to stretch induced by ?
A) NO release
B) Noradrenaline release
C) Opening of Ca2+ channels
D) Adenosine release
Answer (Select an option above to get the answer):
(Single Best Answer) Question 8: There is mutation of gene coding for the ryanodine receptors in malignant hyperthermia. Which of the following statements best explains the increased heat production in malignant hyperthemia ?
A) Increased muscle metabolism by excess of calcium ions
B) Thermic effect of blood
C) Increased sympathetic discharge
D) Mitochondiral thermogenesis
Answer (Select an option above to get the answer):
(Single Best Answer) Question 9: Which of the following methods is not used for measurement of body fluid volumes ?
A) Antipyrine for total body water
B) Inulin for extracellular fluid
C) Evans blue for plasma volume
D) I-albumin for blood volume
Answer (Select an option above to get the answer):
(Single Best Answer) Question 10: The inhibitory neurotransmitter in CNS neurons is ?
A) Glutamate
B) Aspartate
C) Gamma-amino butyric acid
D) Taurine
Answer (Select an option above to get the answer):
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