MBS214 PAST PAPERS
(2011, 2012, 2013, 2015, 2016, 2018, 2019, TELEGRAM AND TUTOR QUESTIONS)
TRUE/FALSE MULTIPLE CHOICE LONG QUESTION NO ANSWER QUERY
TRUE/FALSE QUESTIONS
1. A muscle spindle is a group of specialized intrafusal muscle fibres with non-contractile polar ends and contractile
centre. Muscle spindle has 2 parts, central and peripheral. The central part receives sensory innervation while the
periphery receives motor innervation.
False
2. All postganglionic fibres of the parasympathetic nervous system are cholinergic.
True
3. All sensory information is first projected to the thalamus before it is sent to the cerebral cortex, except visual
information.
False
4. Astrocytes form part of the blood-brain barrier.
False
5. Atelectasis is supported by a decrease in elastic tissue.
False
6. Cerebellum contains over 50% of the total number of neurons found in the entire brain.
True
7. Compliance is supported by an increase in elastic tissue.
False
8. Corticobulbar tracts provide conscious control over skeletal muscles that move the eye, jaw and face.
True
9. Expiration requires the contraction of the abdominal muscles.
True
10. External respiration refers the exchange of gasses between the blood and the tissues of the body.
False, lungs and blood
11. Fibrous layer of the eye provides route for blood vessels and lymphatics.
False, Vascular Layer
12. Gustatory cells only survive for 10 days before they are replaced by basal cells.
True
13. Huntington’s disease is a classic hypokinetic disorder.
False, it is a hyperkinetic disorder as the movements that occur are mostly involuntary.
14. Internal respiration refers the exchange of gasses between the blood and the tissues of the body.
True
15. Low frequency sound waves distort the basilar membrane closer to the oval window.
, False, high frequency
16. Medium spiny neurons are projection neurons of the intermediate nuclei of the basal ganglia
True
17. Merkel’s disk is a slow adapting tactile receptor.
True
18. Merkel’s disks are phasic receptors.
False
19. Merkel’s disks are tonic receptors.
True
20. Most sensory neurons of the peripheral nervous system are unipolar neurons.
True
21. Multipolar neurons are small and all processes look alike, you cannot distinguish between axons and dendrites.
False, Anaxonic Neurons
22. Muscle spindles are innervated by both sensory and motor neurons.
True
23. Muscle spindles are sensory receptors located within the belly of a muscle.
True
24. Muscle spindles are stimulated by stretch and respond by causing muscle relaxation.
False
25. Muscle spindles primarily detect changes in the width of a muscle.
False
26. Olfactory adaptation means that the olfactory receptors become more sensitive to the presence of an odour.
False
27. Posterior spinocerebellar tracts carry axons of second order sensory neurons that don’t cross over to the opposite
side of the spinal cord.
True
28. Secretions of the Tarsal glands absorb water and form thick, pigmented mucus and coat the surfaces of olfactory
organs.
False, visual organs
29. Surfactant is a phospholipid which is produced by the pneumocyte type cells to lower surface tension.
True
30. The anterior spinothalamic tracts carry crude touch and pressure sensations.
True
31. The apneustic area always overrides the pneumotaxic area.
False, the other way around
32. The cerebellum plays a role in non-motor functions such as word association and puzzle solving.
, True
33. The corticospinal tracts conduct sensory impulse from the brain to spinal nerves and outward to various skeletal
muscles
True
34. The dorsal structure to the neural tube develops into the central nervous system
True, the neural groove fuses dorsally and the neural tube will then give rise to the brain and spinal cord.
35. The fibres of the rubrospinal tracts cross over in the brain and pass through the lateral funiculi.
True
36. The input nuclei of the basal ganglia refer to the caudate and putamen nuclei.
True
37. The intensity of a sound is determined by the number of hair cells stimulated at that location.
True
38. The lower the frequency of a sound, the shorter the wavelength and the closer from the oval window will the area
maximum distortion will occur in the basilar membrane.
False, lower frequency, lower wavelength and high frequency is oval window
39. The main auditory pathway synapses in nuclei in the midbrain and thalamus before projecting to the auditory
cortex.
True
40. The motor neurons innervating the intra-fusal muscle fibres of the muscle spindle are called alpha motor neurons.
False, Gamma motor neurons. Alpha motor neurons innervate extrafusal fibres
41. The oligodendrocytes produce myelin in the central nervous system.
True
42. The output nuclei of the basal ganglia refer to the caudate and putamen nuclei.
False, input nuclei
43. The parietal sinus is part of the paranasal sinuses
False
44. The pneumotaxic area always overrides the apneustic area.
True
45. The primary motor and the primary sensory cortices are located in the pre-central and post-central gyri,
respectively.
True
46. The primary motor cortex is located in the post-central gyrus.
False, sensory is in the post central gyrus
47. The primary sensory cortex is located in the post- central gyrus.
True
48. The pyramidal tracts are also known as corticobulbar tracts.
False, corticospinal
, 49. The receptors responding to stimuli that produces sweet, bitter and umami sensations are lined to G-proteins
called gustducins.
True
50. The respiratory membrane consists of alveoli squamous epithelium, capillary endothelium and basal laminae.
False
51. The Schwann cells produce myelin in the central nervous system.
False, Schwann in PNS and Oligodendrocytes in CNS
52. The second order sensory neurons deliver sensations from the receptors to the central nervous system.
False, first order neuron as the second order neurons proceed to move with stimulus within the CNS.
53. The second order sensory neurons of the spinothalamic pathway decussate (cross over) at the medulla oblongata.
False, posterior column pathway
54. The sense of taste is heavily dependent on olfactory receptors.
True
55. The somatic nervous systems carry motor commands to the visceral organs whereas the autonomic nervous
system carry motor commands to the skeletal muscles
False, the other way around
56. The sternocleidomastoids and external intercostal muscles are involved in forced expiration.
False, internal intercostals and abdominal muscles
57. The stimulation of each purkinje cell can be influenced by thousands of mossy fibres.
False, mossy fibres activate granule cells, which send one single axon up into the molecular layer and
bifurcates and activated purkinje cells. If you activate a mossy fibre you activate a purkinje cell via a granule
cell therefore indirectly they have an effect on one another.
58. The telencephalon gives rise to the cerebrum.
True
59. The two cerebral hemispheres are functionally different though anatomy appears the same.
True
60. The vermis receives input from the spinal cord regarding somatosensory and kinaesthetic information
True, the vermis is part of the spinocerebellum so it receives input from somatic nerves.
61. When pH rises or temperature drops less oxygen is released and the Hb02 saturation curve shifts to the left.
True
62. When waves deflect the basilar membrane so that the cilia bend toward the tallest members of a bundle, the
bridges pop more channels open, cations enter the cell, and it depolarizes.
True
