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प्रश्न
During synaptic transmission of nerve impulse, neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.
पर्याय
P = Acetylcholine, Q = Ca++
P = Acetylcholine, Q = Na+
P = GABA, Q = Na+
P = Cholinesterase, Q = Ca++
उत्तर
P = Acetylcholine, Q = Ca++
संबंधित प्रश्न
Distinguish between Cranial nerves and spinal nerves.
Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.
Mention the exact location of the Myelin sheath
Identify the odd one in each set : Cyton, Photon, Axon, Dendron
The diagram given below is a representation of a certain phenomenon pertaining to the nervous system. Study the diagram and answer the following questions:
(i) Name the phenomenon which is being depicted.
(ii) Give the technical term for the point of contact between the two nerve cells.
(iii) Name the parts 1, 2, 3, and 4.
(iv) Write the functions of parts 5 and 6
(v) How does the arrangement of neurons in the spinal cord differ from that of the brain?
With the help of a suitable diagram describe the structures of a neuron.
Fill in the blanks:
A neuron consists of ________ , _________ and ________.
Fill in the blank:
The neurons carrying impulses from the brain to the muscles are called _______________________.
Define the following:
Axon
How does an impulse travel across a synapse?
Differentiate between:
Rods and Cones.
Compare and contrast.
Sympathetic Nervous System and Parasympathetic Nervous System
When the potential across the axon membrane is more negative than the normal resting potential, the neuron is said to be in a state of ______.
Axons ____________.
____________ is the interconnection between two neurons or neuron with motor organ.
Which nerves transmit impulses from the central nervous system towards muscle cells?
Assertion: Impulse travels from dendrite to cell body and then along the axon to its end.
Reason: Information acquired at the end of the dendrite tip of a nerve cell sets of an electric impulse.
Electrical impulse travels in a neuron from
Define the following term:
Synaptic cleft
The figure given below is the basic structural and functional unit of the human nervous system. Study the diagram and answer the following questions:
 |
- Write the technical term for the diagram.
- Name two organs of our nervous system where these cells are richly found.
- How are these cells significant for us?
- Name the cell organelle that is absent in these cells and how does it affect our body metabolism?
- Redraw the same figure and label the following Perikaryon, Axon, Dendrites, Myelin sheath and Node of Ranvier.
