Synapse

Q. Limbic system along with ________ regulates sexual behaviour

1. hypothalamus
2. cerebrum
3. thalamus
4. cerebral cortex

Q.

The gap between two neurons is called as

1. Dendrite

2. Synapse

3. Axon

4. Impulse

Q. Nervous tissue is made up of neurons and neuroglial cells.
Which of the following statements about these two cells is/are false?
(i) Neuroglia makes up more than one-half of the volume of neural tissue in our body.
(ii) Neuroglia protects and supports neurons.
(iii) When a neuron is suitably stimulated, an electrical disturbance is generated which swiftly travels along its cytosol.
(iv) Arrival of the disturbance at the neuron's endings triggers stimulation or inhibition of adjacent neurons or other cells.

1. (i) and (iv)
2. (ii) and (iii)
3. (iii) only
4. (iv) only

Q. Amygdala and hippocampus form a complex structure called the

1. brain stem
2. limbic system
3. cranial meninges
4. corpus callosum

Q.

Write short notes on the following :

(a) Neural coordination (b) Forebrain (c) Midbrain

(d) Hindbrain (e) Retina (f) Ear ossicles

(g) Cochlea (h) Organ of Corti (i) Synapse

Q. Receptor sites for neurotransmitters are present in

1. pre-synaptic membrane
2. tips of axons
3. post-synaptic membrane
4. membranes of synaptic vesicles

Q. Which of the following cranial nerves in man is both sensory and motor?

1. Optic
2. Olfactory
3. Trigeminal
4. Auditory

Q. Which of the following areas or centres do not belong to the cerebral cortex?

1. Sensory area
2. Motor area
3. Respiratory centre
4. Association area

Q. Pre-synaptic neuron and a post-synaptic neuron may or may not be separated by a gap called

1. Synapse
2. Synaptic button
3. Synaptic knob
4. Synaptic cleft

Q. The synaptic vesicles discharges

1. acetylcholine
2. adrenaline
3. epinephrine
4. all of the above

Q.

Synaptic vesicle is found in

1. Pre-synaptic neuron

2. Post-synaptic neuron

3. Synaptic cleft

4. None of the above

Q. Which of the following act is responsible for the depolarization of the neuron ?

1. Closure of voltage gated $N{a}^{+}$ channel
2. Opening of voltage gated $K^{+}$ channel
3. Closure of voltage gated $K^{+}$ channel
4. Opening of voltage gated $N{a}^{+}$ channel

Q.

The dendrites found at the end of axon are termed as ____

1. Telodendrites

2. Axolemma

3. Dendroprocesses

4. Axon Terminal

Q. Synaptic vesicle is found in

1. Pre-synaptic neuron
2. Post-synaptic neuron
3. Synaptic cleft
4. None of these

Q. In the following diagram showing axon terminal and synapse, A, B, C, D and E represents

1. axon terminal, synaptic cleft, synaptic vesicle, neurotransmitters and receptor respectively
2. axon terminal, synaptic vesicle, synaptic cleft, receptor and neurotransmitters respectively
3. synaptic cleft, synaptic vesicle, axon terminal, neurotransmitters and receptor respectively
4. synaptic cleft, axon terminal, synaptic vesicle, neurotransmitters and receptor respectively

Q.

The association of two nerves is called ------------- (synapse/neuron)

Q.

What are the 4 groups of sensory relay nuclei which the alar plate contains?

Q. Short Answer Question:
Describe functional areas of cerebral cortex?

Q. Axolemma has more

1. sodium leakage channels
2. sodium voltage gated channels
3. potassium leakage channels
4. potassium voltage gated channels

Q. The cerebrum wraps around a structure called thalamus, which is -

1. Not a nervous part of a brain
2. A major coordinating centre for sensory signal only
3. A major centre for motor signaling
4. A major coordinating centre for sensory and motor signaling

Q.

What does the synaptic knob comprise?

Q. Study the diagram given below and answer the questions that follow:
(b) Name the parts labelled 1, 2, 3, 4, 5, and 6.

Q. Assertion: A person using cocaine feels high energy level
Reason: Cocaine binds to the neurotransmitter dopamine causing repeated stimulation

1. Both assertion and reason are correct and reason is the correct explanation of the assertion
2. Both assertion and reason are correct but reason is not the correct explanation of assertion
3. The assertion is correct but the reason is incorrect
4. Both assertion and reason are incorrect

Q. Choose the incorrect statement from the following:

1. The peripheral nervous system (PNS) consists of 31 pairs and 12 pairs of spinal and cranial nerves, respectively.
2. Sympathetic nervous system and parasympathetic nervous system are dampening system and flight/fight response system, respectively
3. The photosensitive cells convey the information to bipolar neurons which transfers it to optic nerve.
4. Organ of Corti consists of the basilar membrane, sensory hair cells and tectorial membrane.

Q. Synapse is the site for impulse transmission between the of a pre-synaptic neuron and the of the post-synaptic neuron.

1. cell body
2. dendrite
3. axon terminal
4. axon

Q. Synaptic vesicle is found in

1. Pre-synaptic neuron
2. Post-synaptic neuron
3. Synaptic cleft
4. None of these

Q. Assertion :After hearing a sound, nerve impulse passes from neurons to the brain. Reason: The neuron which pass nerve impulse from organs to the brain is called afferent neuron.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Unidirectional transmission of nerve impulse is maintained by

1. Membrane polarity
2. Interneurons
3. Synapses
4. Myelin sheath

Q. Branched ends of nerve cells are called telodendria, which establish the functional contact with other nerve cell. This connection is called

1. Sinongium
2. Synapse
3. Synapta
4. Synapsis

Q. The diagram given shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the question.
Give the technical term for the point of contact between the two nerve cells.