Consider the following statements:
I: | Impulses travel by the visceral nervous system from the CNS to the viscera and from the viscera to the CNS. |
II: | Impulses travel by the autonomic nervous system from the CNS to the involuntary organs and smooth muscles of the body. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: | is a part of the brain stem |
II: | is a part of the hind brain |
III: | is a part of the limbic system |
1. | Only I and II | 2. | Only I and III |
3. | Only II and III | 4. | I, II and III |
1. | Medulla oblongata | Gastric secretions |
2. | Hypothalamus | Control of body temperature |
3. | Limbic system | Behaviour |
4. | Association areas | Purely sensory areas in the cerebrum |
1. | Limbic system | Behaviour |
2. | Medulla oblongata | Gastric secretions |
3. | Hypothalamus | Thermoregulation |
4. | Corpus callosum | Connects cerebellum with rest of the brain |
Column I | Column II |
A. Peripheral neural system | P. Comprises of all nerves associated with brain and spinal cord |
B. Somatic neural system | Q. Relays impulses from CNS to skeletal muscles |
C. Visceral neural system | R. Transmits impulse from CNS to involuntary organs and smooth muscles |
D. Autonomic neural system | S. Part of PNS where impulses travel from CNS to the viscera and from the viscera to the CNS |
A | B | C | D | |
1. | P | Q | R | S |
2. | Q | R | S | P |
3. | R | S | P | Q |
4. | S | P | Q | R |
1. CNS | 2. Somatic neural system |
3. Autonomic neural system | 4. Visceral neural system |
I. Cell body | II. Dendrites | III. Axon |
1. I and II only | 2. I and III only |
3. II and III only | 4. I, II and III |
Column I | Column II | ||
A. | Multipolar neuron | P. | Embryonic stage |
B. | Bipolar neuron | Q. | Retina |
C. | Unipolar neuron | R. | Cerebral cortex |
A | B | C | |
1. | P | Q | R |
2. | Q | R | P |
3. | R | Q | P |
4. | R | P | Q |
Assertion (A): | Neurons are excitable cells. |
Reason (R): | Their membranes are in a polarised state. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
The resting axonal membrane is impermeable to:
I: Sodium ions
II: Potassium ions
III: Negatively charges proteins present in the axoplasm
1. | I and II only | 2. | I and III only |
3. | II and III only | 4. | I, II and III |