Title NEURAL CONTROL AND COORDINATION.pdf ✅

Page| 1 21.NEURAL CONTROL AND COORDINATION 1. Which one is correct about the physiology of eye? a) The pressure within the eye (the intraocular pressure) is about 1.5 mm Hg (0.2 kPa) b) When light is shone in one eye both pupils constrict c) The pupils dilate when the eye is focused on a near object d) The aqueous humour is an ultrafiltrate of plasma 2. Part of ear where sound is transduced is a) Tympanic membrane b) Malleus, incus and stapes c) Semi-circular canal d) Cochlea 3. You are watching a horror movie and you notice your heart is beating fast and mouth is dry. It is because of a) Fight and flight response b) Autonomic nervous system c) Sympathetic nervous system d) Both (a) and (c) 4. When the stimulus reaches the end of one neuron, it is conducted to the adjacent neuron through the secretions of a) Acetaldehyde b) Acetylcholine c) Acetylcholine esterase d) Acetyl Co-A 5. The reflex pathway comprises a) One afferent neuron b) One efferent neuron c) One afferent and one efferent neuron d) One afferent and one receptor neuron 6. The highly specialized cells called neurons can a) Detect stimuli b) Receive stimuli c) Transmit stimuli d) All of the above 7. If a motor nerve has a conduction velocity of 10 ms −1 , how long will it take an action potential to reach a muscle 0.75 m from the spinal cord? a) 75 m b) 1.07 m c) 14 m d) 1.4 m 8. Which of the following statements are correct about the midbrain? I. Located between the thalamus/hypothalamus II. Has a canal named cerebral aqueduct passes through III. Dorsal part consists of 4 lobes Choose the correct option a) I and II b) II and III c) I and III d) I, II and III 9. Presynaptic neuron and a post-synaptic neuron may or may not be separated by a gap called

Page| 3 a) Rhodopigments b) Photopigments c) Conopigments d) None of these 21. The specific region of hypothalamus, responsible for physiological sweat secretion is a) Para-ventricular nucleus b) Supra-optic nucleus c) Median eminence d) Pars distalis 22. A 22 years student goes to his ophthalamologist. He has problem in reading books because he is not be able to contract his a) Suspensory ligament b) Pupil c) Iris d) Ciliary muscles 23. The accumulation of protein called amyloid β − peptide in human brain causes a) Addison’s disease b) Huntington’s disease c) Alzheimer’s disease d) Motor-neuron disease 24. A structure of neuron comprises of a) Cell body, synaptic knob, ganglia b) Synaptic vesicles, ganglia, dendrites c) Cell body, dendrites, ganglia d) Cell body, dendrites, axon 25. The process of response to a peripheral nervous stimulation, that occurs involuntarily is called a) Reflactory potential b) Action potential c) Reflex action d) Activation potential 26. The adult human eyeball is nearly a ..... structure a) Oval b) Circular c) Opaque d) Spherical 27. The sympathetic and parasympathetic neural system combines to form a) Somatic neural system b) Autonomic neural system c) Central neural system d) Peripheral neural system 28. Choose the correct non-protein amino acid from the given option. a) Hydroxyproline b) Hydroxylysine c) Cystine d) γ-amino butyric acid 29. In a man, abducens nerve is injured. Which one of the following function will be affected? a) Movement of the eye ball b) Swallowing c) Movement of the tongue d) Movement of the neck 30. Which of the following parts of a neuron is covered by fatty sheath? a) Axon b) Cyton c) Dendrite d) Node of Ranvier 31. The system that transmits impulses from CNS to skeletal muscles is
Page| 4 a) Sympathetic neural system b) Parasympathetic neural system c) Somatic neural system d) Autonomic neural system 32. The pressure on either sides of the ear drum gets equalized by a) Pinna b) Eustachian tube c) Cochlea d) Labyrinth 33. The diagram given below is the functional organization of the human nervous system. identify A, B, C,D and E in the figure a) A-PNS, B-CNS, C-ANS, D-Sympathetic nervous system, E-Parasympathetic nervous system b) A-ANS, B-CNS, C-PNS, D-Sympathetic nervous system, E-Parasympathetic nervous system c) A-CNS, B-PNS, C-ANS, D-Sympathetic nervous system, E-Parasympathetic nervous system d) A-ANS, B-PNS, C-ANS, D-Sympathetic nervous system, E-Parasympathetic nervous system 34. In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive a) K + into the cell b) K +and Na + out of the cell c) Na + into the cell d) Na + out of the cell 35. Which is a part of spinal cord? a) Central canal b) Ventricle c) Ventral canal d) Enterocoel 36. Mark the following statements as true/false and choose the correct option from the codes given below I. Neuroglial cells are the packing and supporting cells found in the brain and spinal cord II. Oligodendrocytes is a category of glial cells that forms myelin sheaths around the axon III. Microglia provides mechanical support to the neurons IV. Astrocytes communicate with one another through potassium channels Codes I II III IV a) True True False False b) False True True False c) False False True True d) True False True False 37. For quick coordination, our neural system is organized through a) Organ to organ connections b) Cell to cell connections c) Point to point connections d) Point to cell connections 38. Saltatory conduction occurs in a) Myelinated nerves fibres b) Non-myelinated nerve fibres c) Liver cells d) All of the above