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Neural Control And Coordination

460 Questions Start Allen Test
All Exams Allen Errorless
J & K CET 2012 Q26 Errorless Generation and Conduction of Nerve Impulse MCQ
An investigator places an isolated neuron in a calcium free medium, gives the neuron a suprathreshold stimulus and then performs an assay to test whether neurotransmitter is released into the medium. Which of the following outcomes would you predict
A.
No neurotransmitter is detected since influx of calcium into the synaptic knob is required for neurotransmitter release
B.
No neurotransmitter is detected since influx of calcium is required in order for the neuron to conduct an action potential
C.
Neurotransmitter is detected since calcium is not required for action potential conduction and the initial stimulus was suprathreshold
D.
We cannot predict the outcome without knowing whether the neuron was myelinated
AIIMS 2012 Q27 Errorless Generation and Conduction of Nerve Impulse MCQ
The release of chemical messenger from synaptic vesicles is under the influence of these ion(s)
A.
$C l ^ { - }$
B.
$F e ^ { + } + \mathrm { a n d } S ^ { + + }$
C.
${ C a } ^ { + + }$
D.
$M g ^ { + + } { \mathrm { a n d } } S r ^ { + + }$
BHU 2012 Q28 Errorless Generation and Conduction of Nerve Impulse MCQ
Nerve gas affects neuromuscular activity by
A.
Blocking the acetylcholine receptor sites
B.
Inhibiting the release of acetylcholine
C.
Inhibiting acetylcholinesterase
D.
Enhancing the release of acetylcholine
Odisha JEE 2012 Q29 Errorless Generation and Conduction of Nerve Impulse MCQ
Which of the following is not a type of neuroglial cells
A.
Astrocytes
B.
Oligodendrocytes
C.
Microglia
D.
Chondrocytes
Kerala PMT 2012 Q30 Errorless Critical Thinking MCQ
Read the following statements and choose the correct option A. Blood cells secrete fibres of structural proteins called collagen or elastin B. Neuroglial cells protect and support the nephrons C. Osteocytes are present in spaces called lacunae D. Striated muscle fibres are bundled together in a parallel fashion E. Biceps are involuntary and striated
A.
C and D alone are wrong
B.
B and D alone are wrong
C.
A and C alone are wrong
D.
B and C alone are wrong
E.
A, B, and E alone are wrong
Kerala PMT 2011 Q31 Errorless Human nervous system MCQ
Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at
A.
Pons region of brain
B.
Thalamus
C.
Spinal cord
D.
Right cerebral hemisphere
E.
Left cerebral hemisphere
WB JEE 2011 Q32 Errorless Generation and Conduction of Nerve Impulse MCQ
The amount of CSF in the cranial cavity is
A.
500 ml
B.
140 ml
C.
1 litre
D.
1.5 ml
KCET 2011 Q33 Errorless Generation and Conduction of Nerve Impulse MCQ
The brain stem is made up of
A.
Midbrain, pons, cerebellum
B.
Midbrain, pons, medulla oblongata
C.
Diencephalon, medulla oblongata, cerebellum
D.
Cerebellum, cerebrum, medulla oblongata
Kerala PMT 2011 Q34 Errorless Generation and Conduction of Nerve Impulse MCQ
Which of the statements about the mechanism of muscle contraction are correct
(I) Acetylcholine is released when the neural signal reaches the motor end plate
(II) Muscle contraction is initiated by a signal sent by CNS via a sensory neuron
(III) During muscle contraction, isotropic band gets elongated
(IV) Repeated activation of the muscles can lead to lactic acid accumulation
A.
I and IV are correct
B.
I and III are correct
C.
II and III are correct
D.
I, II and III are correct
E.
I and II are correct
CBSE PMT (Pre.) 2011 Q35 Errorless Generation and Conduction of Nerve Impulse MCQ
When a neuron is in resting state i.e. not conducting any impules, the axonal membrane is
A.
Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions
B.
Comparatively more permeable to Na+ ions and nearly impermeable to K+ ions
C.
Equally permeable to both Na+ and K+ ions
D.
Impermeable to both Na+ and K+ ions
Kerala PMT 2011 Q36 Errorless Generation and Conduction of Nerve Impulse MCQ
Which of the following statement are correct and incorrect (1) Synaptic cleft of neurons secrete adrenaline 1. Synaptic clett of neurons secrete adrenaline (2) Myelinated nerve fibres are enveloped with Schwann cells, which form a myelin sheath around the axon (3) Non-myelinated nerve fibre is enclosed by a Schwann cell that does not form a myelin sheath (4) Spinal cord and cranial nerves are made of nonmyelinated nerve fibres of the four statements
A.
1, 2 are correct but 3 and 4 are incorrect
B.
1, 2 and 3 are correct but 4 is incorrect
C.
3 and 4 are correct but 1 and 2 are incorrect
D.
1 and 4 are correct while 2 and 3 are incorrect
E.
2 and 3 are correct while 1 and 4 are incorrect
AMU (Med.) 2010 Q37 Errorless Human nervous system MCQ
The third ventricle of the brain is situated in the
A.
Base of telencephalon
B.
Roof of metencephalon
C.
Roof of diencephalon
D.
Base of myelencephalon
CBSE PMT (Mains) 2010; WB JEE 2016 Q38 Errorless Human nervous system MCQ
Select the answer with correct matching of the structure, its location and function
Column-IColumn-II
(A)Sacral nerves
(B)Thoracic nerves
(C)Coccygeal nerves
(D)Cervical nerves
(E)Lumbar nerves
(P)1 pair
(Q)8 pairs
(R)7 pairs
(S)12 pairs
(T)5 pairs
A.
A-S, B-P, C-R, D-Q, E-T
B.
A-T, B-R, C-P, D-S, E-Q
C.
A-R, B-S, C-Q, D-T, E-P
D.
A-Q, B-T, C-R, D-P, E-S
E.
A-T, B-S, C-P, D-Q, E-T
WB JEE 2010 Q39 Errorless Human nervous system MCQ
Which one of the following cranial nerves is carrying the nerve fibres originating from the Edinger-Westphal nucleus
A.
Oculomotor
B.
Trochlear
C.
Abducens
D.
Vagus
WB JEE 2010 Q40 Errorless Human nervous system MCQ
How many laminae are present in the grey matter of spinal cord
A.
Four
B.
Six
C.
Eight
D.
Ten
WB JEE 2010 Q41 Errorless Human nervous system MCQ
Which of the following is not related to the autonomic nervous system
A.
Peristalsis
B.
Digestion
C.
Excretion
D.
Memory and learning
WB JEE 2010 Q42 Errorless Human nervous system MCQ
Comprehension of spoken and written words take place in the region of
A.
Association area
B.
Motor area
C.
Wernicke's area
D.
Broca's area
CPMT 2010 Q43 Errorless Human nervous system MCQ
Reflex action is
A.
Stimulus ā†’ sensory ā†’ motor ā†’ response
B.
Stimulus ā†’ motor ā†’ sensory ā†’ response
C.
Reception ā†’ motor ā†’ sensory ā†’ response
D.
Sensory ā†’ stimulus ā†’ motor ā†’ response
CPMT 2010 Q44 Errorless Human nervous system MCQ
Parasympathetic nerves arise from which region of the nervous system
A.
Thoracolumbar
B.
Cervical
C.
Craniosacral
D.
Lumbar
AMU (Med.) 2010 Q45 Errorless Generation and Conduction of Nerve Impulse MCQ
Which of the following is not an effect of the sympathetic nervous system
A.
Dilation of pupil
B.
Inhibition of peristalsis
C.
Elevation of blood pressure
D.
Stimulation for saliva secretion
Kerala PMT 2010; NEET 2013; NEET (Karnataka) 2013 Q46 Errorless Generation and Conduction of Nerve Impulse MCQ
In the following diagram showing axon terminal and synapse, A, B, C, D and E respectively represents
A.
Axon terminal, synaptic cleft, synaptic vesicles, neurotransmitters and receptors
B.
Axon terminal, synaptic vesicles, synaptic cleft receptors and neurotransmitters
C.
Synaptic cleft, synaptic vesicles, axon terminal neurotransmitters and receptors
D.
Synaptic cleft, axon terminal, synaptic vesicles, neurotransmitters and receptors
E.
Synaptic vesicles, axon terminal, synaptic cleft, receptors and neurotransmitters
Odisha JEE 2010 Q47 Errorless Generation and Conduction of Nerve Impulse MCQ
In a modulated nerve fibre, the conduction of impulse is faster due to the presence of
A.
Pericytes
B.
Endoneurium and epineurium
C.
Myelin sheath and nodes of Ranvier
D.
Nissl's granules
AMU (Med.) 2010 Q48 Errorless Critical Thinking MCQ
In Myasthenia gravis acetylcholine
A.
Receptors on motor end plate are reduced
B.
Secretion from nerve terminals is reduced
C.
Esterase activity is inhibited
D.
Secretion from nerve terminals is enhanced
DUMET 2010 Q49 Errorless Critical Thinking MCQ
Molecules that bear charged groups of opposite polarity are known as
A.
Zwitterions
B.
Cations
C.
Anions
D.
Negative ions
Odisha JEE 2009 Q50 Errorless Human nervous system MCQ
During the course of evolution which part of the brain has shown maximum increase in size
A.
Mid brain
B.
Fore brain
C.
Hind brain
D.
All of the above