1. Action potentials are generated due to
1) Outflux K+ 2) Influx of K+ 3) Influx of Na+ 4) Outflux of Na+
2. Crura cerebri connect pons with
1) Cerebral hemispheres 2) Hypothalamus
3) Cerebellar hemispheres 4) Limbic system
3. Which is not a part of brain stem?
1) Inferior and superior colliculi 2) Spinal cord
3) Pons 4) Medulla
4. Cells which adhere to the neurons and capillaries are
1) Astrocytes 2) Mast cells
3) Ependymal cells 4) Schwann cells
5. Relay station between the cerebellum, spinal cord and rest of the brain is
1) Medulla oblongata 2) Mesencephalon 3) Cerebrum 4) Pons varolii
6. Relative refractory period coincides with
1) Hyper polarization 2) Repolarization
3) Depolarization 4) Resting membrane potential
7. Arbor vitae are branched strips made up of
1) White matter 2) Grey matter 3) Pia mater 4) Dura mater
8. Choroid plexus is a network of
1) Nerves 2) Capillaries 3) Muscle fibers 4) Lymph vessels
9. The superior colliculi are twin bodies within the corpora quadrigemina of the midbrain that are involved in
1) Visual reflexes 2) Auditory reflexes
3) Olfactory reflexes 4) Release of pituitary hormones
10. Which part of the brain is involved in loss of control when a person drinks alcohol?
1) Thalamus 2) Cerebrum 3) Pons varolii 4) Cerebellum
11. Important centres for heart rate, blood pressure, respiration, swallowing, coughing and vomiting are located in the
1) Cerebrum 2) Midbrain 3) Cerebellum 4) medulla oblongata
12. Learning is related to
1) Hypothalamus 2) Cerebrum 3) Cerebellum 4) Medulla
13. An injury to diencephalon may result in
1) Loss of memory 2) Difficulty in breathing
3) Loss of sensation of heat 4) Loss of intelligence
14. Scala tympani of cochlea terminates at
1) Round window 2) Oval window
3) Semi circular levels 4) Vestibule
15. The appetite and satiety centres in the brain are located in
1) Hypothalamus 2) Cerebral hemispheres
3) Cerebellum 4) Medulla oblongata
16. Part of ear having hair cells that acts as auditory receptors is
1) Basilar membrane 2) Tympanum 3) Stapes 4) Otolith organ
17. Chief function of crista and macula is
1) To perceive pressure 2) To receive vibrations
3) To maintain equilibrium 4) To hear
18. In a nerve cell potassium concentration is
1) Lesser on outer side 2) Greater on outer side
3) Equal on both sides 4) None of these
19. Primary visual area is located in
1) Diencephalon 2) Optic lobe 3) Cerebellum 4) Cerebrum
20. Nerves that are not found in frog but are found in humans are
1) Glossopharyngeal and hypoglossal
2) Glossopharyngeal and spinal accessory
3) Spinal accessory and hypoglossal
4) Pneumogastric and hypoglossal
21. Which of the following is not involved in knee jerk reflex?
1) Muscle spindle 2) Motor neuron
3) Brain 4) Inter neurons
22. Primary auditory area is located in the lobes of cerebrum
1) Frontal 2) Temporal 3) Occipital 4) Parietal
23. Which of the following is not found in mammalian brain?
1) Subdural space 2) Sub-arachnoid space 3) Optocoel 4) Dura mater
24. You have two types of brains in petridish. How would you distinguish the brain of a mammal by?
1) Corpus callosum 2) Optic lobes 3) Cerebellum 4) Cerebrum
25. Read the following and identify the correct statements.
i) Spinal cord extends from medulla oblongata to superior border of fourth lumbar vertebra
ii) Filum terminale is the non-nervous fibrous tissue extends into coccyx
iii) Conus medullaris is the conical portion of spinal cord between first and second lumbar vertebrae
iv) Because of anterior, posterior horns of white matter, grey matter is organised into funiculi in spinal cord
1) i, ii 2) i, iv 3) ii, iii 4) ii, iv
26. The yellowish pigmented spot at the posterior pole of the human eye lateral to the blind spot is
1) Crista 2) Saccule 3) Macula lutea 4) Iris
27. What is the resting membrane potential of nerve fiber?
1) -70 mV 2) -45 mV 3) +75 mV 4) 45 mV
28. The release of chemical messenger from synaptic vesicle is under the influence of these ions
1) Cl− 2) Fe++ 3) Mg++ 4) Ca++
29. The voltage required for raising the membrane potential from -80 mV to threshold potential during conduction of nerve impulse is
1) -25 mV 2) 25 mV 3) -10 mV 4) 10 mV
30. In human eye, canal of Schlemn is present at the junction of
1) Sclera and Cornea 2) Iris and Ciliary body
3) Retina and Choroid 4) Macula lutea and Optic disc
31. The three layers of retina in the order in which they conduct impulses
1) Bipolar neurons, photoreceptor neurons, ganglion cell layer
2) Ganglion cell layer, photoreceptor layer, bipolar cell layer
3) Photoreceptor layer, bipolar cell layer, ganglion cell layer
4) Ganglion cell layer, bipolar cell layer, photoreceptor layer
32. In human brain, the part with ‘tree of life’ acts as
1) Gyroscope of the body 2) Brain warning centre
3) Thermostat of the body 4) Emotional hub
33. Arrange the following structures of spinal cord from outer to inner side in the correct sequence.
A) Central canal B) White matter C) Dura mater
D) Pia mater E) Grey matter F) Arachnoid layer
1) ABCDEF 2) ABCFED 3) DEFCBA 4) CFDBEA
34. The part of internal ear that perceives vertical movement is
1) Crista 2) Macula 3) Utricle 4) Saccule
35. In the human brain, paracoels are connected to the diocoel by
1) foramen magnum 2) foramen of Monro
3) foramen ovale 4) fenestra ovalis
36. White matter of spinal cord is organized into regions called
1) Horns 2) flocculi 3) collicoli 4) funiculi
37. Assertion (a): At resting phase the axolemma has greater permibility to Na+ ions than to K+ ions
Reason (R): During hyper polarization, K+ voltage gates are said to be lazy gates
1) Both (A) and (R) are individually true, and (R) is the correct explanation of (A)
2) Both (A) and (R) are individually true but (R) is not the correct explanation of (A)
3) (A) is true but (R) is false
4) (A) is false (R) is true
38. Which of the following is not a character of reflex action?
1) instantaneous 2) involuntary 3) conscious 4) Automatic
39. The following controls and integrates the activities of autonomous nervous system
1) The little brain 2) the thermostat of the body 3) brain stem 4) the tree of life
40. Cauda equina is enclosed within
1) Spinal cord 2) neural canal 3) filum terminale 4) conus medullaris
41. What is the first step in the activation of reflex arc
1) Activation of motor neuron 2) information processing
3) activation of receptor 4) activation of a sensory neuron
42. Non myelinated neurons are found in
1) white matter of brain 2) white matter of spinal cord
3) grey matter of brain 4) peripheral nervous system
43. Not a part of limbic lobe or limbic system of brain is
1) Amygdala 2) hippocampus 3) cerebellum 4) inner parts of cerebrum
44. Hypothalamus is not related to this function
1) Controlling of body temperature 2) urge for drinking
3) urge for eating 4) thinking, reasoning
45.The visible coloured portion of the eye is
1) Retina 2) Iris 3) cornea 4) lens
46. Cornea in the fibrous tunic is a
1) Non Vascular and non transparent coatcovering the coloured iris.
2) Vascular and transparent coat covering the coloured iris.
3) Non-vascular but transparent coat covering the non coloured iris.
4) Non vascular but transparent and covering the coloured iris.
47. Observe the following presentation of an action potential.
In the above diagram ‘5’ represents
1) Hyperpolarization due to influx of K+
2) Hyperpolarization due to efflux of K+
3) Resting potential due to influx of Na+
4) Hyperpolarization due to influx of Na+
48. What is the first step in the activation of reflex Arc?
1) Activation of motor neuron 2) Information processing
3) Activation of receptor 4) Activation of a sensory neuron
Answers: 1-3; 2-1; 3-2; 4-1; 5-4; 6-1; 7-1; 8-2; 9-1; 10-4; 11-4; 12-2; 13-3; 14-1; 15-1; 16-1; 17-3; 18-1; 19-4; 20-3; 21-3; 22-2; 23-3; 24-1; 25-3; 26-3; 27-1; 28-4; 29-2; 30-1; 31-3; 32-1; 33-4; 34-4; 35-2; 36-4; 37-4; 38-3; 39-2; 40-2; 41-3; 42-3; 43-3; 44-4; 45-2; 46-4; 47-2; 48-3.
