451 Physiology True about shunt vessels: A>Evenly distributed throughout the skinB>Role in nutritionC>Play a role in thermoregulation (Correct Answer)D>No autonomic nervous regulation
452 Physiology The repolarization phase of an action potential is due to AIncreasing sodium permability and increasing potassium permeabilityBIncreasing sodium permeability and decreasing potassium permeabilityCDecreasing sodium permeability and an immediate increasing potassium permeabilityDDecreasing sodium permeability and a delayed increase potassium permeability (Correct Answer)
453 Physiology Lifespan of fetal RBC is- ASame as adult RBCB1/4 of adult RBCC1/2 of adult RBCD2/3 of adult RBC (Correct Answer)
454 Physiology Stool osmotic gap is calculated by using the formula: A2 x (stool + stool ) (Correct Answer)B2 x (stool + stool )C2 x (stool + stool )D2 x (stool + stool )
455 Physiology Mass movements are often stimulated after a meal by distention of the stomach (gastrocolic reflex) and distention of the duodenum (duodenocolic reflex). Mass movements often lead to which of the following? ABowel movements (Correct Answer)BGastric movementsCHaustrationsDEsophageal contractions
456 Physiology Fever is due to: AInterleukin-1 (Correct Answer)BInterleukin-2CInterleukin-3DInterleukin-4
457 Physiology Role of Fluorine in dental health is the following EXCEPT ATo make enamel harder than usual (Correct Answer)BTo replace several hydroxyl ions in hydroxyapatiteCTo make enamel several times less solubleDTo promote deposition of calcium phosphate to 'heal' pits in enamel surface
458 Physiology In which type of nerve fibres is conduction blocked maximally by pressure AA alpha (Correct Answer)BA betaCA gammaDC
459 Physiology Which of the following statement regarding water reabsorption in the tubules? AThe bulk of water reabsorption occurs secondary to Na+ reabsorption (Correct Answer)BMajority to facultative reabsorption occurs in proximal tubuleCObligatory reabsorption in ADH dependent.D20% of water is always reabsorbed irrespective of water balance