5001. Energy expenditure during normal breathing____________?
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A. 2% 3% of total energy spent

B. 25% 50% of total energy spent

C. 50% -75% of total energy spent

D. 15% 20% of total energy spent

5002. Site of ADH action is______________?
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A. Loop of Henle

B. Proximal tubule

C. Collecting tubule

D. Vasa recta

5003. The largest fraction of the total body fluid is_______________?
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A. Extracellular fluid

B. Intracellular fluid

C. Plasma

D. Whole blood

5004. Decreased MCHC is found in_____________?
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A. Megaloblastic anemia

B. Vit B12 deficiency

C. Sideroblastic anemia

D. Microcytic hypochromic anemia
5005. Ions participating in clotting mechanism are________________?
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A. Iron

B. Calcium

C. Aluminum

D. Copper

5006. In which segment of the nephron does tubular fluid has the highest osmolarity ?
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A. Collecting duct

B. Proximal tubule

C. Henles loop

D. Distal tubule

5007. Which of the following is not a marker of bone formation_________________?
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A. Hydroxy proline

B. Alkaline phosphatase

C. Osteocalcin

D. Procollagen marker

5008. During inspiration when the diaphragm contracts, the intrapleural pressure becomes_____________?
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A. Equal to the intra alveolar pressure

B. Positive

C. More negative

D. Less negative

5009. Arterial PO2 is reduced in_____________?
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A. CO poisoning

B. KCN poisoning

C. Pulmonary hypoventilation

D. Anemia

5010. Christmas factor is_____________?
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A. VWA

B. PTA

C. Prothrombin

D. PTC
5011. To check objective pain response, which is best used method_______________?
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A. H- Reflex

B. Facial pain scale

C. Knee jerk reflex

D. R III Reflex

5012. Most of the sodium is reabsorbed in_____________?
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A. Vasa recta

B. PCT

C. DCT

D. Loop of henle

5013. Minimum blood pressure is in_____________?
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A. Aorta

B. Capillaries

C. Venules

D. Arteries

5014. The dicrotic notch on the aortic pressure curve is caused by_________________?
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A. Contraction of the atria

B. Closure of the aortic valve

C. Rapid filling of the left ventricle

D. Closure of the pulmonary valve

5015. The temperature of body is controlled by_______________?
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A. Medulla

B. Precentral gyrus

C. Diencephalon

D. Hypothalamus
5016. Afferent component of corneal reflex is mediated by ________________?
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A. Facial nerve

B. Glossopharyngeal nerve

C. Trigeminal nerve

D. Vagus nerve

5017. Chromatolysis is______________?
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A. Disappearance of nissel granules

B. Disintegrating of Nucleus

C. Disintegration of golgi apparatus

D. Decrease in cell size

5018. What is common between systemic and pulmonary circulation is_____________?
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A. Pulse Pressure

B. Volume of the circulation per minute

C. Peripheral vascular resistance

D. Total Capacity

5019. Blood supply to the brain during moderate exercise________________?
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A. decreases

B. Increases then decreases

C. Increases

D. Remains constant
5020. Delta waves of Electroencephalogram have frequency of ______________?
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A. Between 8 and 13 cycles per second

B. Between 4 and 7 cycles per second

C. More than 14 cycles per second

D. Less than 3.5 cycles per second
5021. Wallenberg degeneration is seen in______________?
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A. Proximal cut end of nerve with cell body

B. Distal cut end of nerve without cell body

C. Both the free ends of the cut nerve

D. All are true

5022. function of Merkels cells is_______________?
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A. Melanophage

B. Chemoreceptor

C. Tactile sensation

D. Proprioception

5023. Isovolumetric relaxation ends immediately after________________?
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A. When ventricular pressure falls below atrial pressure

B. None of the above

C. When ventricular pressure falls below aortic pressure

D. AV Valve closes

5024. Tissues with least regenerative potential is________________?
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A. Nerve

B. None of the above

C. Skin

D. Cardiac muscle

5025. Pain producing substance is________________?
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A. Substance P

B. Acetyl choline

C. Serotonin

D. Histamine

5026. Sensations of pain from teeth and temperature are carried by_______________?
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A. Corticospinal tract

B. Ventral spinothalamic tract

C. Lateral spinothalamic tract

D. Corticobulbar tract

5027. Following are extrapyramidal tracts except______________?
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A. Corticospinal

B. Vestibulospinal

C. Rubrospinal

D. Reticulospinal

5028. Which of the following acts as a neurotransmitter inhibitor _______________?
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A. GABA

B. Aspartic acid

C. Glutamate

D. Lysin

5029. Closure of aortic valve occurs before the following event_______________?
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A. Isovolumetric contraction

B. Pre-diastole

C. Pre-systole

D. Isovolumetric relaxation
5030. Which of the following coagulation factors is deficient in classical hemophilia ?
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A. IX

B. XII

C. X

D. VIII
5031. The effects of Adrenaline on heart are all except__________________?
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A. Increases heart rate

B. Increases oxygen uptake by heart

C. Increases force of contraction

D. Decreases myocardial irritability
5032. Consider the following statements________________?
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A. Starlings law of heart states that increase in force of contraction is directly related to cardiac ouput

B. Stalings law of heart states that the force of ventricular contraction is directly related to the end diastolic volume

C. Both A and B

D. None of the above

5033. Sweat glands are supplied by only_______________?
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A. Motor nerves

B. Sympathetic nerves

C. Sensory nerves

D. Parasympathetic nerves

5034. Which of the following is not true for myelinated nerve fibers______________?
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A. Membrane currents are generated at nodes of Ranvier

B. Impulse through myelinated fibers is slower than non- myelinated fibers

C. Saltatory conduction of impulses is seen

D. Local anesthesia is effective only when the nerve is not covered by myelin sheath

5035. Intensity of sound is measured in________________?
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A. Diopters

B. Daltons

C. Pounds

D. Decibels
5036. Pain is conducted by_______________?
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A. A-beta fibers

B. A-delta fibers

C. A-alpha fibers

D. A-gamma fibers

5037. Heart muscle, true are all except_______________?
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A. Has multiple nuclei

B. Has branching

C. Has gap junctions

D. Act as syncytium

5038. In CNS, the myelination is carried out by _____________?
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A. Oligodendrocytes

B. Schwann cells

C. Microglia

D. Astrocytes

5039. Voluntary movement of eye ball is controlled by______________?
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A. Cerebellum

B. Frontal eye field

C. Superior colliculus

D. Visual cortex area

5040. Pain is conducted by________________?
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A. A-delta fibers

B. A-beta fibers

C. A-alpha fibers

D. A-gamma fibers

5041. Distribution of blood flow is mainly regulated by the________________?
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A. Venules

B. Capillaries

C. Arteries

D. Arterioles
5042. Effect on force of contraction of heart is_____________?
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A. Dromotropic effect

B. Ionotropic effect

C. Chronotropic effect

D. Bathmotropic

5043. Sensory receptors for pain are_______________?
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A. Free nerve endings

B. End bulbs of Krause

C. End organs of Ruffini

D. Pacinian corpuscles

5044. Which sensation is not lost on the side of lesion in brown sequard syndrome ?
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A. Touch

B. Muscle sense

C. Vibration sense

D. Temperature
5045. Peripheral resistance is maximum in_______________?
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A. Artery

B. Arteriole

C. Aorta

D. Vein

5046. The ventricular repolarization in ECG is best seen in_______________?
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A. Q wave

B. R wave

C. P wave

D. T wave
5047. Respiratory center is situated in_______________?
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A. Hypothalamus

B. Midbrain

C. Medulla oblongata

D. Spinal cord

5048. Group B fibers are present in_____________?
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A. Intrafusal fibers of the muscle spindle

B. Spinothalamic tracts

C. Golgi tendon apparatus

D. Autoonomic preganglionic fibers
5049. Absolute period when whole heart is in diastole is______________?
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A. 0.3 seconds

B. 0.7 seconds

C. 0.7 seconds

D. 0.4 seconds
5050. Stimulation of baroreceptors results in_______________?
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A. Increase in heart rate

B. Decreased vagal discharge

C. Decrease in blood pressure

D. Increased sympathetic discharge