35230306
Description
Quiz by Halima Mahmoud, updated more than 1 year ago
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Created by Halima Mahmoud
almost 3 years ago
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Question 1
Question
True about Myopia: (short/nearsightedness)
Answer
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A) Focal length of the eyeball is too long
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B) Focal length of the eyeball is too short
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C) Objects far away can be seen well
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D) I think there was something about “far away objects are focused ... on the retina and near objects are focused ... on the retina?
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E) Far point can be 1m away
Question 2
Question
9. Visual acuity:
Answer
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A) Depends on the state of rods
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B) Means the distance of ... and 1 arc
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C) Depends on the visual field
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D) Can be impaired by defects of focusing
Question 3
Question
True about gamma motor neuron
Answer
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A) They maintain activity of Ia afferent
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B) They detect the length of extrafusal muscle fibres
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C) They produce contraction of nuclear bag and chain fibres
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D) They stimulate the activity of Ib fibres
Question 4
Question
Multi unit smooth muscle
Answer
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A) Elicited by postganglionic neurons
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B) Elicited by nicotinic receptor
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C) Same distance as intramuscular conduction (something like that)
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D) Gap junction ... affected by smooth muscle
Question 5
Question
15. Location of cholinergic receptors:
Answer
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A) Endocrine cells of medulla of adrenal gland
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B) Sarcolemma of smooth muscle cells of urinary bladder
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C) Sarcolemma of skeletal muscle cells
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D) Sarcolemma of smooth muscle cells of systemic veins
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E) Sarcolemma of visceral smooth muscle cells of gallbladder
Question 6
Question
22. What statement is right concerning beta rhythm:
Answer
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B) Low frequencies high amplitude in NREM sleep
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C) Forms sleep spindles in EEG
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D) Appears over occipital lobes when eyes are closed
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E) Measured mostly on frontal lobe for conscious thought
Question 7
Question
Sympathetic system:
Answer
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A) Contraction of smooth muscles of vessel by alpha 1-Adrenergic receptor
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B) Decrease dilation of bronchi by beta 2-adrenergic receptor
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C) Increased liberation of epinephrine mediated by alpha1
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D) Decrease contraction of gastric sphincter by beta 1-adrenergic receptor
Question 8
Question
8. True about the phenomena of beginning of depolarisation of skeletal muscl
Answer
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A) Nicotinic receptor generates action potential on motor neuron end plate
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B) ACh generates end plate potenial
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C) Muscarinic M1 —> IPSP on motor end plates
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D) EPP on sarcolemma by ligand gated channels (Ryanodine receptors)
Question 9
Question
14. Which are part of the withdrawal reflex arc:
Answer
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A) Excitatory interneuron
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B) Alpha neuron
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C) Golgi tendon organ
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D) Muscle spindle
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E) D alpha input
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F) 1 alpha input
Question 10
Question
16. Dark adaptation of the eye:
Answer
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A) Degeneration of rhodopsin
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B) Regeneration of light sensitive of rhodopsin
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C) Constriction of pupil
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D) Dilation of pupil
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E) Increased sensitivity of retina for light
Question 11
Question
-18. What is right about audition:
Answer
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A) Stereo-cilia bend towards kinocilium, this causes opening of potassium channels (cell discharge more frequently)
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B) Behind scala media vibration causes 20Hz
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C) Impulse goes to cochlear nerve...
Question 12
Question
-21. In synaptic transmission:
Answer
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A) End plate potential is produced by ligand-gated sodium channels
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B) Calcium ions enter axon terminal through voltage gated channels
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C) Calcium mediates resynthesis of neurotransmitters
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D) Presynaptic inhibition mediated by inhibitory transmitter as GABA producing IPSP in axon terminal other than neuron, Such process decreases ability of axon to conduct action potential
Question 13
Question
-25. Graded action potential — find true:
Answer
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A) Develops in axon hillock
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B) Develops outside of axon hillock
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C) Native nicotinic receptor
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D) EPP is an example of IPSP
Question 14
Question
12. Rhodopsin:
Answer
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A) Composed of transducer and photopsin
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B) Ionotropic receptor of the free floating disc of the outer segment of the rods
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C) More sensitive to light than photopsin
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D) Mechanoreceptor of coupled G-protein
Question 15
Question
6. Auditory pathway — correct order:
A) Inferior colliculus -
B) Neurons of medial geniculate nucleus -
C) Neurons of spiral ganglia -
D) Cochlear nucleus (ventral + dorsal) -
E) Superior olive -
F) Cortex (Brodmanns 41) -
Answer
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A, C, B, D, F, E
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C, D, A, E, B, F
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A, B, C, E, D, F
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C, F, A, B, E, D
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