1879158
Description
Quiz by #أطباء_2020 , updated more than 1 year ago
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Created by #أطباء_2020
over 9 years ago
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Question 1
Question
1-fine sensations of touch are transmitted by :
Answer
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a-anterior spinothalamic tract
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b-posterior spinocerebellar tract
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c-dorsal column tract
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d-lateral spinothalamic tract
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e-anterior spinocerebelar tract
Question 2
Question
2-after a pain stimulus is applied , fast pain is felt within which of the following time frames ?
Answer
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a-0.01 sec
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b-0.1 sec
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c-1 sec
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d-1 msec
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e- 1 nanosec
Question 3
Question
3-pain receptors in the skin are classified as which of the following ?
Answer
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a-encapsulated nerve endings
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b-a single class of morphologically specialized receptors
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c-the same type of receptor that detects position sense
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d-free nerve endings
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e-pacinian corpuscles
Question 4
Question
4-transmitter agent is used by the fast pain fibers at their synapses in dorsal horn ?
Answer
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a-glutamate
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b-acetylcholine
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c-GABA
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d-substance p
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e-calcitonin gene related peptide
Question 5
Question
5-inhibition of pain signals by tactile stimulation of a skin surface involves which of the following ?
Answer
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a-Type A alpha
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b-type A beta
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c-type A sigma
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d-type c fibers
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e-golgi tendon organ
Question 6
Question
6-within the primary somatosensory cortex , various parts of the contra-lateral body surface are represented in areas of varying sizes that reflect which of the following ?
Answer
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a-relative size of the body parts
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b-density of specialized peripheral receptors
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c-size of muscles in the body parts
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d-conduction of velocity of the primary afferent fibers
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e-size of the primary afferent fibers
Question 7
Question
7-loss of pain sensations on one side of the body coupled with loss of proprioception , precise tactile localization , and vibratory sensations on the contralateral side of the body ?
Answer
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a-herpes zoster
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b-thalamic pain syndrome
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c-lateral medullary syndrome
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d-brown sequard sydrome
Question 8
Question
8-position sense or more commonly proprioceptive sensation involves muscle spindle and which of the following ?
Answer
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a-skin tactile receptor
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b-deep receptors in joint capsule
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c-both tactile and joint capsule receptors
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d-pacinian corpuscle
Question 9
Question
9-sensory neurons :
Answer
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a-about 10 million sensory neurons
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b-are unipolar
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c-deliver information to the CNS
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d-all of the above
Question 10
Question
10-ataxia results due to damage of :
Answer
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a-corpora quadrigemina
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b-dorsal column tract
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c-hypothalamus
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d-cerebellum
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e-b&d
Question 11
Question
11-most common transmitter in the body :
Answer
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a-seretonin
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b-dopamine
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c-acetylcholine
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d-norepinephrine
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e-epinephrine
Question 12
Question
12-which is not a neurotransmitter :
Answer
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a-acetylcholine
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b-acetylcholinesterase
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c-dopamine
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d-seretonin
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e-epinephrine
Question 13
Question
13-the thalamus :
Answer
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a-final relay for ascending sensory information
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b-smell is the only sensation that doesnt relay in it
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c-secretes hormones
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d-a&b
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e-none of the above
Question 14
Question
14-regarding receptors in the skin :
Answer
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a-all skin receptors are encapsulated
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b-the receptive fields of touch receptors are uniform in area
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c-noci receptors of the skin are bare nerve endings
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d-all sensory information from the skin reaches the brain via the dorsal column pathway
Question 15
Question
15-one presynaptic cell releases dopamine while another releases seretonin at their synapses , sumation of these signals would most likely ......... a postsynaptic neuron
Answer
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a-depolarize
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b-hyperpolarize
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c-excite
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d-all of the above
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e-none of the above
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