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प्रश्न
Explain the Term: Voluntary-action
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उत्तर
The stimulation from the nerve cells of the receptor organ passes into the spinal nerve (along the dorsal root) into the spinal cord and from there it goes straight to the brain. From the brain another impulse passes, to the spinal cord and travels along the ventral root of the spinal nerve to reach the effector organ (a muscle), the activity of which is a response to the nerve impulse which has come from the brain.
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संबंधित प्रश्न
What is a synapse?
In a synapse, chemical signal is transmitted from :
(a) axon to cell body of the same neuron
(b) cell body to axon end of the same neuron
(c) dendrite end of one neuron to axon end of adjacent neuron
(d) axon end of one neuron to dendrite end of adjacent neuron
Fill in the blank:
Outer protective layer of skin, called epidermis is made up of ________ tissue.
Fill in the blank:
The three main parts of the brain are ................................ and ............................
Name the following:
Outermost meningial membrane of spinal cord.
Differentiate between:
Cerebrum and Cerebellum.
Name the following:
Unit of the nervous system is
State the Function:
Myelin sheath
Degeneration of dopamine producing neurons in the CNS causes ______ disease.
Name the hormone secreted by Pars intermedia in lower vertebrates.
