Q. No.
Given figure shows the types of neurons found in human body. Identify the correct match for their location in the body from the options given:
I. Embryonic stages
II. Retina
III. Dorsal root ganglion of spinal nerve
IV. Cerebral cortex
V. Olfactory membrane
A
B
C
D
1.
I
II
III
IV
2.
II
V
I
III
3.
I
III
II
IV
4.
III
IV
II
I
| I: | The action potential, generated due to the depolarization of the axonal membrane, arrives at the axon terminal. |
| II: | Potassium ions enter the synaptic knob. |
| III: | Synaptic vesicles are activated and release neurotransmitter in the synaptic cleft. |
| IV: | Neurotransmitter binds to the receptor on the post-synaptic membrane. |
| 1. Only I, II and III | 2. Only I, III and IV |
| 3. Only II, III and IV | 4. I, II, III and IV |
| A | Frontal lobe | Planning, reasoning and problem solving |
| B | Parietal lobe | Integrating sensory information, including touch, temperature, pressure and pain |
| C | Occipital lobe | Location of the primary visual cortex which receives visual information from the eyes |
| D | Temporal lobe | Contains the primary auditory cortex, which receives auditory information from the ears |
| 1. | Only A and B | 2. | Only A, B and C |
| 3. | Only B, C and D | 4. | A, B, C and D |
What would be true regarding the structure shown in the given figure?
1. It is a chemical synapse and there is unidirectional transmission of impulse across it.
2. It is a chemical synapse and a chemical neurotransmitter is involved in the transmission of impulse across it.
3. It is an electrical synapse and it is relatively slower than the chemical synapse.
4. It is an electrical synapse, and although faster than the chemical synapse, is rare in human body.
| 1. | Diencepahlon and is the location of the third ventricle. |
| 2. | Corpora quadrigemina and the cerebral aqueduct passes through it. |
| 3. | Limbic system and regulates the behaviour in humans. |
| 4. | Reticular formation and is the gate keeper to consciousness. |
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Identify the correct statements regarding the events A and B in the given diagram:
I: A is depolarization and is caused by the influx of sodium ions.
II: B is repolarization and is caused by the efflux of potassium ions.
| 1. Only I | 2. Only II |
| 3. Both I and II | 4. Neither I nor II |
| I: | The association areas of the cerebral cortex are neither clearly sensory nor motor in function. |
| II: | The association areas are responsible for complex functions like intersensory associations, memory and communication. |
| 1. Both are correct | 2. Both are incorrect |
| 3. Only I is correct | 4. Only II is correct |
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| I: | The cerebral cortex, referred to as the grey matter, is thrown into prominent folds. |
| II: | The cerebral white mater contains motor areas, and association area. |
| 1. Both are correct | 2. Both are incorrect |
| 3. Only I is correct | 4. Only II is correct |
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