Question56::Which of the following statement is/are correct regarding regenerative changes in an axon?
1) Schwann cell on either side of injured site multiply by mitosis to form a growth cone

0) Neurofiprils starts growing from tip of the proximal stem called sprouting

(ii) Out of many Neurofibrils only one will find the way through the regeneration tube and reaches the target structure.

‘AOnly (i and ii)
B-Only (i and i)
C-Only (ii and ii

D-All the above (i, ii and ii)
Correct Answer: Option-C

Question 7:-Following are true about Gap Junctions except
(i) Provide low resistant bridge for rapid spread of excitation
(மி) Present in cardiac muscle

(ii) Responsible for plasticity of smooth muscle

(iv) They are electrical synapses

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8:Only (i)
Only (i and i)
D:-Only tiv)

Correct Answer: Option ®

धि business man after a cocktail party falls into a deep sleep with his right arm under his head. Very next morning when he was awaken, he is unable to move his right arm,
But it tingles and pain sensation is intact on the right arm. What is the reason for the loss of motor function of his right arm?

‘AcSensory nerve fibers are located deep inside and are least affected by pressure
B:-B-fibers are more sensitive to pressure than A fibers
CoAsfibers are more sensitive to pressure than C-fibers
D-A. fibers are more susceptible to hypoxia than B-fibers
Correct Answer:- Option-C
QuestionS9:-A statement which is false regarding action potential is
(0 Inmammalian heart depolarization last about 2ms

(ii) The stow return of K*channel to the closed state contribute to the after hyperpolarization
(ii) Voltage gated x” channels bring the action potential to an end cause closure of their gate through a positive feed back

Only i)
B:-Only (0

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D:-None of the above
Correct ೧೦೫೮: ೦00೦೧,

Question60:-Which of the following statement is/are correct about Channel Myopathies?
0 Hyperkalemic periodic paralysis is associated with mutation in Na‘channel
(0) Malignant hyperthermia can respond to general anaesthetic like Halothane

(ii) Paramyotonia congenita is associated with mutation in. Na'channel
‘Only (it and i)
8:Only (i)
Only ti)

D-All the above (i, ii and ii)
Correct Answer: Option-D
‘Question61:-Decerebrate animal shows all the features except
0 Absence of Righting reflex
0) Opisthotonus
(ii) Increased muscle tone in Flexor group of muscle
(iv) Can stand unsupported
A-Only (i)
B-Only (i)
C-Only (ii and iv)
D:-Only (ii)
Correct Answer: Option-D
Question62::Which of the following is/are correct statement about Paciniam corpuscle?
(i) Slowly adapting receptors
(ii) Respond maximum to sustained touch
(ii) Found in less number in Mesentery

(४) Found in large number in the Skin and Subcutaneous tissue

‘AOnly (and iv)