Q. No.
The "sodium-potassium pump" pumps ______.
1. sodium ions out and potassium ions in
2. sodium ions in and potassium ions out
3. sodium and potassium ions in
4. sodium and potassium ions out
Which of the following statements are true regarding
association areas of brain?
A. These are the largest areas of forebrain.
B. These are involved in the regulation of sexual
behaviour, expression of emotional reactions
and motivation.
C. These are responsible for complex functions like
intersensory association, memory and
communication.
D. It is a part of cerebral cortex.
1. A & B
2. A, B & C
3. A, C & D
4. A & C
Select the incorrect statement:
| 1. | Na+/K+ ATPase is an electrogenic pump that helps to maintain an electrochemical ionic gradient across axolemma. |
| 2. | At rest, axoplasm has lower ions concentration than ion concentration. |
| 3. | Brain stem comprises midbrain, pons, and medulla oblongata. |
| 4. | Thalamus part of the hindbrain is responsible for emotions like anger and rage. |
Which of the following structures or regions is incorrectly paired with its function?
| 1. | limbic system | screening of information between the spinal cord and the brain; regulates arousal and sleep |
| 2. | medulla oblongata | homeostatic control center |
| 3. | cerebellum | unconscious coordination of movement and balance |
| 4. | corpus callosum | band of fibers connecting left and right cerebral hemispheres |
Receptor sites for neurotransmitters are located on the:
1. tips of axons
2. axon membranes in the regions of the nodes of Ranvier
3. postsynaptic membrane
4. presynaptic membrane
Which part of the brain is responsible for thermoregulation?
1. Medulla oblongata
2. Cerebrum
3. Hypothalamus
4. Corpus callosum
A canal called the cerebral aqueduct passes through the:
1. Diencephalon
2. Midbrain
3. III ventricle
4. IV ventricle
A diagram showing the axon terminal and synapse is given. Identify correctly at least two of A-D:
1. B- Synaptic connection; D- K+
2. A- Neurotransmitter; B- Synaptic cleft
3. C- Neurotransmitter; D- Ca++
4. A- Receptor; C- Synaptic vesicles
Injury localized to the hypothalamus would most likely disrupt:
1. short-term memory
2. co-ordination during locomotion
3. executive functions, such as decision making
4. regulation of body temperature
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