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प्रश्न
State the Function:
Myelin sheath
State the functions of the following:
Myelin sheath
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उत्तर
The myelin sheath covers the axon of a nerve cell, provides insulation and prevents indiscriminate distribution and leakage of nerve impulses.
संबंधित प्रश्न
The neuron which carries a message for action to a muscle or gland is known as a ______ neuron.
Multiple choice question. Tick (✓) the correct choice:
Nervous system in humans consists of
- brain and nerves
- brain and spinal cord
- brain, spinal cord and nerves
- none of the above
What are voluntary and involuntary actions? Which part of the nervous system controls them?
Fill in the blank:
Central nervous system consists of ................. and ................
Draw well labeled diagram of a ‘Neuron’ and name the following parts:
(1) Node of Ranvier (2) Nissil granules (3) Cyton
The below diagram is the surface of the tongue showing the taste zone.
(i) Label the parts 1-4.
(ii) Where are the receptors for sensations of taste are located?
(iii) Why do people suffering from cold often complain that they cannot taste their food?
Mention, if the following statement is True or False
A nerve impulse passes from one neuron to another across a synapse.
Name the hormone secreted by Pars intermedia in lower vertebrates.
The node of Ranvier is found in ______
Vomiting centre is located in ______
