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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 the need for a system of control and coordination in an organism?
Nervous system is absent in _____________.
Name the three components of a neuron (or nerve cell).
State whether the following statement is true (T) or false (F):
The sound waves from the outer ear are carried by the middle ear to the inner ear.
Define the following:
Motor neuron:
Name the following:
The neobrain.
Define the following:
Nerve impulse
How many pairs of cervical spinal nerves are present in humans?
Identify the lobe which has centre for visual functions.
Which are the sensory cranial nerves?
