6660093
Description
Quiz by Nada Medhat, updated more than 1 year ago
|
|
Created by Nada Medhat
about 8 years ago
|
|
Question 1
Question
Regarding sensory receptor properties
Answer
-
All receptors respond to a specific quality of a stimulus
-
A touch receptor will generate a constant rate of discharge of its axon for as long as the receptor is stimulated.
-
The frequency of a train of action potentials in an afferent fibre reflects the intensity of the stimulus given to its receptor
-
The first step in sensory transduction is the generation of an action potential
Question 2
Question
Receptors that respond when a stimulus is first applied, but quickly stop responding to continual stimulation, are the
Answer
-
phasic receptors
-
nocioreceptors
-
exteroceptors
-
tonic receptors
Question 3
Question
An environmental stimulus acting on the body initially produces an electrical response, called a(n) .................. in the receptor neuron
Answer
-
generator potential
-
excitatory postsynaptic potential
-
action potential
-
stimulus potential
Question 4
Question
Alkalosis .......neuronal activity , while acidosis ....... neuronal activity
Answer
-
increases , increases
-
.increases,decreases
-
decreases, increases
-
decreases,decreases
Question 5
Question
Synaptic transmission is inhibited by all the following, except
Answer
-
oxygen lack
-
alkalosis
-
acidosis
-
prolonged activity of synapse
Question 6
Question
Post-tetanic Potentiation in synapses
Answer
-
is due to increased Ca ++ concentration in postsynaptic neurons
-
is due to increased Ca ++ influx into presynaptic neurons
-
results from slow prolonged stimulation of synapse
-
causes fatigue of the synapse
Question 7
Question
Intermittent Claudications evoke
Answer
-
visceral pain
-
deep pain
-
cutaneous hyperalgesia
-
colicky pain
Question 8
Question
in hemisection of the spinal cord , all the following are true EXCEPT:-
Answer
-
anethesia is found at the level of lesion ipsilaterally
-
hyperthesia nay present above the level of lesion on the same side due to irritation of dorsal root
-
spastic paralysis and exaggerated muscle reflex is found contralaterally below level of lesion
-
all of the above are true
Question 9
Question
when sensory area I of the cerebral cortex is ablated
Answer
-
perception of pain is completely abolished
-
perception of touch is completely abolished
-
there is loss of tactile localization but two point discrimination is spared
-
there is loss of tactile localization as well as two point discrimination
Question 10
Question
which of the following NOT produce intracranial headache :-
Answer
-
brain tumor
-
lumbar puncture
-
constipation and alcohol
-
otitis media
Want to create your own Quizzes for free with GoConqr? Learn more.