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प्रश्न
Write the names and functions of three parts of human nervous system in which it is divided.
उत्तर
The human nervous system has three components—central nervous system, peripheral nervous system and autonomic nervous system.
(i) Central nervous system (CNS): CNS consists of the brain and spinal cord. It controls and regulates all the activities of the body.
(ii) Peripheral nervous system (PNS): PNS consists of all the nerves and the nerve network which is present in the body. It is formed by the cranial and spinal nerves which connect the body parts to CNS.
(iii) Autonomic nervous system (ANS): ANS is an involuntary nervous system. It controls involuntary actions and coordinates the organs such as the heart, stomach and lungs, which do not function according to our will.
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संबंधित प्रश्न
What is voluntary nervous system? Explain the working of the voluntary nervous system with an example.
The number of pairs of nerves which arises from the spinal cord is:
The junction between two adjacent neurons is called :
(a) nerve junction
(b) sensory junction
(c) synapse
(d) neuro-muscular joint
Write one word in the space provided to complete the second pair of the related words pertaining to the nervous system.
Memory: cerebrum:: breathing:
Balance: cerebellum:: reasoning:
Briefly describe the structure of the cerebrum in the human brain, and mention its functions.
What are voluntary and involuntary actions? Which part of the nervous system controls them?
Define the following:
Reflex arc
Define the following:
Neuron
Explain the structure of the brain.
Mention if the following statement is true (T) or false (F) Give reason.
Flavour and taste are one and the same thing.
Answer the following questions briefly:
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Name the following:
Outermost meningial membrane of spinal cord.
Name the following:
Cavity in which brain is situated.
Choose the correct answer.
Synapse is a close proximity of _______________
Choose the Odd One Out:
What are the parts of the brain stem?
Identify the labels (i- iii) in the T.S. of the spinal cord.
Destruction of the anterior horn cells of the spinal cord would result in loss of ______.
Stimulation of nerves of the sympathetic nervous system ______.
