Physiology MCQs

Option A: Potassium

Option B: Phosphate

Option C: Carbonic acid

Option D: Chloride ion

Correct Answer: Chloride ion ✔

Option A: Thrombin formation

Option B: Prothrombin formation

Option C: Fibrin formation

Option D: Thromboplastin formation

Correct Answer: Prothrombin formation ✔

Option A: Hemolytic reaction

Option B: Remission of disease

Option C: Hypokalemia

Option D: Metabolic acidosis

Correct Answer: Hemolytic reaction ✔

Option A: Lymphocytes

Option B: Mast cells

Option C: Neutrophils

Option D: Erythrocytes

Correct Answer: Mast cells ✔

Option A: Dilute with equal volume of 0.9% saline

Option B: Add solution of sodium citrate

Option C: Add solution of calcium chloride

Option D: Add fibrinogen

Correct Answer: Add solution of sodium citrate ✔

Option A: Megakaryocytes

Option B: Norm oblasts

Option C: Myelocytes

Option D: Macrocytes

Correct Answer: Norm oblasts ✔

Option A: Partial thromboplastin time ( PTT)

Option B: Prothrombin time (PT)

Option C: Bleeding time (BT)

Option D: Capillary fragility test (CFT)

Correct Answer: Prothrombin time (PT) ✔

Option A: VIII

Option B: IX

Option C: X

Option D: XII

Correct Answer: VIII ✔

Option A: Impairment of both sensory and motor function

Option B: Wallerian degeneration

Option C: Intact neural sheath is not present

Option D: Reversible loss, which will be regenerated i 6-8 wks

Correct Answer: Intact neural sheath is not present ✔

Option A: Word formation

Option B: Comprehends language not speaking

Option C: Present in posterior part of temporal lobe

Option D: Is the confluence of somatic , auditory and visceral areas

Correct Answer: Word formation ✔

Option A: They cross Blood Brain Barriers

Option B: They are acidic precursors of Brain amines

Option C: They act as neuromodulators

Option D: They are metabolites of various neurogentic amines .

Correct Answer: They cross Blood Brain Barriers ✔

Option A: Corticospinal tract

Option B: Corticocerebral tract

Option C: Lateral spinothalamic tract

Option D: Ventral spinothalamic tract

Correct Answer: Lateral spinothalamic tract ✔

Option A: Glutamate

Option B: GABA

Option C: Aspartic acid

Option D: Lysin

Correct Answer: GABA ✔

Option A: decreases

Option B: Remains constant

Option C: Increases

Option D: Increases then decreases

Correct Answer: Remains constant ✔

Option A: Vagus nerve

Option B: Facial nerve

Option C: Trigeminal nerve

Option D: Glossopharyngeal nerve

Correct Answer: Trigeminal nerve ✔

Option A: Reticulospinal

Option B: Corticospinal

Option C: Rubrospinal

Option D: Vestibulospinal

Correct Answer: Corticospinal ✔

Option A: Gap junctions

Option B: Tight junctions

Option C: Anchoring junctions

Option D: Focal junctions

Correct Answer: Gap junctions ✔

Option A: Parasympathetic nerves

Option B: Sympathetic nerves

Option C: Sensory nerves

Option D: Motor nerves

Correct Answer: Sympathetic nerves ✔

Option A: Nerve

Option B: Skin

Option C: Cardiac muscle

Option D: None of the above

Correct Answer: Nerve ✔

Option A: Deuteranopia

Option B: Protanopia

Option C: Protanomaly

Option D: Deuteranomaly

Correct Answer: Protanopia ✔

Option A: Serotonin

Option B: Substance P

Option C: Histamine

Option D: Acetyl choline

Correct Answer: Substance P ✔

Option A: Astrocytes

Option B: Schwann cells

Option C: Microglia

Option D: Oligocytes

Correct Answer: Microglia ✔

Option A: Neuronal inhibition

Option B: Neuronal activation

Option C: Glial cell inhibition

Option D: Glial cell activation

Correct Answer: Neuronal inhibition ✔

Option A: Motor areas of cerebral cortex

Option B: Anterior hypothalamus

Option C: Pathways for recurrent collateral inhibition in the spinal cord

Option D: Basal ganglia complex

Correct Answer: Basal ganglia complex ✔

Option A: The romberg’s sign is positive

Option B: There is adiodokokinesia

Option C: There is pendular knee jerk

Option D: There is involuntary termor

Correct Answer: There is pendular knee jerk ✔

Option A: Touch

Option B: Vibration sense

Option C: Muscle sense

Option D: Temperature

Correct Answer: Temperature ✔

Option A: Schwan cell mitosis

Option B: Axonal sprouting

Option C: Myelin sheath degeneration

Option D: Nuclear disintegration

Correct Answer: Myelin sheath degeneration ✔

Option A: Nuclear bag intrafusal fibers

Option B: Nuclear chain

Option C: Golgi tendon organ

Option D: Pacinium corpuscles

Correct Answer: Nuclear bag intrafusal fibers ✔

Option A: Postural position

Option B: Covering of the body

Option C: Peripheral vasoconstriction

Option D: all of the above

Correct Answer: all of the above ✔

Option A: Disintegrating of Nucleus

Option B: Disintegration of golgi apparatus

Option C: Disappearance of nissel granules

Option D: Decrease in cell size

Correct Answer: Disappearance of nissel granules ✔

Option A: Schwann cells

Option B: Astrocytes

Option C: Oligodendrocytes

Option D: Microglia

Correct Answer: Oligodendrocytes ✔

Option A: Cerebrum

Option B: Medulla oblongata

Option C: Hypothalamus

Option D: Cerebellum

Correct Answer: Medulla oblongata ✔

Option A: Superior colliculus

Option B: Frontal eye field

Option C: Cerebellum

Option D: Visual cortex area

Correct Answer: Cerebellum ✔

Option A: Lateral walls

Option B: Nasal septum

Option C: Lateral wall and nasal septum above superior concha

Option D: None of the above

Correct Answer: Lateral wall and nasal septum above superior concha ✔

Option A: Midbrain

Option B: Cerebrum

Option C: Hypothalamus

Option D: Pons

Correct Answer: Hypothalamus ✔

Option A: Intrafusal fibers of the muscle spindle

Option B: Golgi tendon apparatus

Option C: Autoonomic preganglionic fibers

Option D: Spinothalamic tracts

Correct Answer: Autoonomic preganglionic fibers ✔

Option A: Medulla

Option B: Precentral gyrus

Option C: Diencephalon

Option D: Hypothalamus

Correct Answer: Hypothalamus ✔

Option A: Babinsky test

Option B: Chvostek test

Option C: Finger – nose test

Option D: Weber’s test

Correct Answer: D. Weber’s test ✔

Option A: Trigeminal nerve ganglion

Option B: Geniculate ganglion

Option C: Otic ganglion

Option D: Superior cervical ganglion

Correct Answer: Geniculate ganglion ✔

Option A: Hypothalamus

Option B: Stria nigra

Option C: Frontal lobe

Option D: Temporal lobe

Correct Answer: Hypothalamus ✔

Option A: A-alpha fibers

Option B: A-beta fibers

Option C: A-gamma fibers

Option D: A-delta fibers

Correct Answer: A-delta fibers ✔

Option A: Constriction of pupil

Option B: Dilatation of pupil

Option C: Convergence of eye ball

Option D: Increase in the anterior curvature of lens

Correct Answer: Dilatation of pupil ✔

Option A: Jaw opening reflex

Option B: Jaw clenching reflex

Option C: Jaw gnashing reflex

Option D: None of the above

Correct Answer: Jaw opening reflex ✔

Option A: Magnitude of the stimulus

Option B: Intracellular potassium concentration

Option C: extracellular sodium concentration

Option D: resting membrane potential

Correct Answer: extracellular sodium concentration ✔

Option A: Has dense Nissl grandules

Option B: Has no Nissl granules

Option C: Is at commencement of dendrites

Option D: Is round in shape

Correct Answer: Has no Nissl granules ✔

Option A: Subfornical region

Option B: Habenuclear trigone

Option C: Area posterma

Option D: Neurohypophysis

Correct Answer: Habenuclear trigone ✔

Option A: Thalamus

Option B: Area 3,1,2

Option C: Areas 5,7

Option D: Pulvinar

Correct Answer: Area 3,1,2 ✔

Option A: Loss of function of Thalamus

Option B: Loss of function of Hypothalamus

Option C: Loss of function of cerebellum

Option D: Loss of function of Basal ganglia

Correct Answer: Loss of function of cerebellum ✔

Option A: Neurolemma

Option B: Perineurium

Option C: Axolemma

Option D: Myelin sheath

Correct Answer: Perineurium ✔

Option A: More than 14 cycles per second

Option B: Between 8 and 13 cycles per second

Option C: Less than 3.5 cycles per second

Option D: Between 4 and 7 cycles per second

Correct Answer: Less than 3.5 cycles per second ✔

Option A: Pacinian corpuscles

Option B: End organs of Ruffini

Option C: End bulbs of Krause

Option D: Free nerve endings

Correct Answer: Free nerve endings ✔

Option A: Sweating

Option B: Vasodilatation

Option C: Decrease heat production

Option D: Non- shivering thermogenesis

Correct Answer: Vasodilatation ✔

Option A: Tactile sensation

Option B: Melanophage

Option C: Chemoreceptor

Option D: Proprioception

Correct Answer: Tactile sensation ✔

Option A: Parasympathetic stimulation

Option B: Sympathetic stimulation

Option C: CNS stimulation

Option D: sensory stimulation

Correct Answer: Parasympathetic stimulation ✔

Option A: Diopters

Option B: Daltons

Option C: Decibels

Option D: Pounds

Correct Answer: Decibels ✔

Option A: Pressure

Option B: Pain

Option C: Touch

Option D: Temperature

Correct Answer: Pressure ✔

Option A: -70 mv

Option B: -90 mv

Option C: -55 mv

Option D: + 35 mv

Correct Answer: -70 mv ✔

Option A: Arteriolar constriction

Option B: Ciliary muscle contraction

Option C: Sweat secretion

Option D: All of the above

Correct Answer: All of the above ✔

Option A: VII

Option B: IX

Option C: X

Option D: XII

Correct Answer: IX ✔

Option A: Gastric dilatation

Option B: Blood glucose levels

Option C: Blood insulin levels

Option D: All of the above

Correct Answer: Blood glucose levels ✔

Option A: MIdbrain

Option B: Pons

Option C: Medulla

Option D: Cerebellum

Correct Answer: Medulla ✔

Option A: Proximal cut end of nerve with cell body

Option B: Distal cut end of nerve without cell body

Option C: Both the free ends of the cut nerve

Option D: All are true

Correct Answer: Distal cut end of nerve without cell body ✔

Option A: Myelin degeneration

Option B: Axonal degeneration

Option C: Mitosis of schwann cell

Option D: Sprouting

Correct Answer: Axonal degeneration ✔

Option A: Dopamine

Option B: GABA

Option C: Acetyl choline

Option D: Nor epinephrine

Correct Answer: Dopamine ✔

Option A: Near sightedness

Option B: Far sightedness

Option C: Constriction of the pupil

Option D: Dilation of the pupil

Correct Answer: Near sightedness ✔

Option A: Broca’s area

Option B: Sensory area

Option C: Primary motor area

Option D: Visual area

Correct Answer: A. Broca’s area ✔

Option A: fibers

Option B: fibers

Option C: Parasympathetic fibers

Option D: Sympathetic fibers

Correct Answer: fibers ✔

Option A: Proprioceptors

Option B: Nociceptors

Option C: Exteroceptors

Option D: Chemo receptors

Correct Answer: Proprioceptors ✔

Option A: Have increased excitability

Option B: Have to nodes of Ranvier

Option C: Have no power of regeneration

Option D: Have no association of Schwann cells

Correct Answer: Have to nodes of Ranvier ✔

Option A: Basal ganglia

Option B: Pain pathway

Option C: Pyramidal tract

Option D: Parathyroid gland

Correct Answer: Basal ganglia ✔

Option A: Impulse through myelinated fibers is slower than non- myelinated fibers

Option B: Membrane currents are generated at nodes of Ranvier

Option C: Saltatory conduction of impulses is seen

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

Correct Answer: Impulse through myelinated fibers is slower than non- myelinated fibers ✔

Option A: Hypotonia

Option B: Tremor

Option C: Hemiballismus

Option D: Athetosis

Correct Answer: Hypotonia ✔

Option A: Corticospinal tract

Option B: Corticobulbar tract

Option C: Lateral spinothalamic tract

Option D: Ventral spinothalamic tract

Correct Answer: Lateral spinothalamic tract ✔

Option A: Somatic only

Option B: Parasympathetic

Option C: Sympathetic

Option D: Cholinergic

Correct Answer: Cholinergic ✔

Option A: Medulla oblongata

Option B: Spinal cord

Option C: Midbrain

Option D: Hypothalamus

Correct Answer: Medulla oblongata ✔

Option A: Spino thalmamic tract

Option B: Dorsal column

Option C: Corticospinal tract

Option D: Spinocerebellar tract

Correct Answer: Spino thalmamic tract ✔

Option A: A-alpha fibers

Option B: A-beta fibers

Option C: A-gamma fibers

Option D: A-delta fibers

Correct Answer: A-delta fibers ✔

Option A: Increase in heart rate

Option B: Decreased vagal discharge

Option C: Increased sympathetic discharge

Option D: Decrease in blood pressure

Correct Answer: Decrease in blood pressure ✔

Option A: Due to closure of semilunar valves

Option B: Is occasionally split

Option C: Has longer duration than 1st heart sound

Option D: Marks the onset of diastole

Correct Answer: Has longer duration than 1st heart sound ✔

Option A: Act as syncytium

Option B: Has multiple nuclei

Option C: Has gap junctions

Option D: Has branching

Correct Answer: Has multiple nuclei ✔

Option A: AV Valve closes

Option B: When ventricular pressure falls below aortic pressure

Option C: When ventricular pressure falls below atrial pressure

Option D: None of the above

Correct Answer: When ventricular pressure falls below atrial pressure ✔

Option A: Purkinje system

Option B: Bundle of HIS

Option C: Right and left bundle branches

Option D: AV node

Correct Answer: Purkinje system ✔

Option A: Arteries

Option B: Arterioles

Option C: Capillaries

Option D: Venules

Correct Answer: Arterioles ✔

Option A: Chronotropic effect

Option B: Dromotropic effect

Option C: Bathmotropic

Option D: Ionotropic effect

Correct Answer: Ionotropic effect ✔

Option A: Liver

Option B: Brain

Option C: Kidney

Option D: Heart

Correct Answer: Liver ✔

Option A: 0.7 seconds

Option B: 0.3 seconds

Option C: 0.7 seconds

Option D: 0.4 seconds

Correct Answer: 0.4 seconds ✔

Option A: 0.4 seconds

Option B: 0.8 seconds

Option C: 1.2 seconds

Option D: 1.6 seconds

Correct Answer: 0.8 seconds ✔

Option A: Auto regulation

Option B: Hormones

Option C: Parasympathetic impulses

Option D: Sympathetic impulse

Correct Answer: Auto regulation ✔

Option A: AV node

Option B: SA node

Option C: Bundle of His

Option D: Purkinje fibers

Correct Answer: Purkinje fibers ✔

Option A: Isovolumetric contraction

Option B: Isovolumetric relaxation

Option C: Pre-diastole

Option D: Pre-systole

Correct Answer: Isovolumetric relaxation ✔

Option A: cardiac output and body weight

Option B: Cardiac output and body surface area

Option C: Cardiac output and work of the heart

Option D: Stroke volume and pulse rate

Correct Answer: Cardiac output and body surface area ✔

Option A: Increased blood pressure, increased heart rate

Option B: Decreased B.P , decreased heart rate

Option C: Increased B.P, decreased heart rate

Option D: Decreased B.P, increased heart rate

Correct Answer: Decreased B.P , decreased heart rate ✔

Option A: Starling’s law of heart states that increase in force of contraction is directly related to cardiac ouput

Option B: Staling’s law of heart states that the force of ventricular contraction is directly related to the end diastolic volume

Option C: Both A and B

Option D: None of the above

Correct Answer: Both A and B ✔

Option A: Aorta

Option B: Arteries

Option C: Capillaries

Option D: Venules

Correct Answer: Venules ✔

Option A: Venules

Option B: Arterioles

Option C: Capillaries

Option D: Precapillary sphincters

Correct Answer: Arterioles ✔

Option A: Peripheral resistance X tissue fluid

Option B: Peripheral resistance X cardiac rate

Option C: Blood pressure X cardiac rate

Option D: Heart rate X blood volume

Correct Answer: Heart rate X blood volume ✔

Option A: “P” wave

Option B: “Q” wave

Option C: “R” wave

Option D: “T” wave

Correct Answer: D. “T” wave ✔

Option A: SA node decreases firing

Option B: Increased AV node excitability

Option C: Decreased ventricular contraction

Option D: Tachycardia

Correct Answer: SA node decreases firing ✔

Option A: Closure of the pulmonary valve

Option B: Rapid filling of the left ventricle

Option C: Closure of the aortic valve

Option D: Contraction of the atria

Correct Answer: Closure of the aortic valve ✔

Option A: Measures the change in Po2 in arterial blood

Option B: Measures Po2 in venous blood

Option C: Measures the changed in CO2 in arterial blood

Option D: Measures the change in CO2 in venous blood

Correct Answer: Measures the change in Po2 in arterial blood ✔