Question

What constitutes the central and peripheral nervous system ? How are the components of central nervous system protected ?

CBSE Class X Science LA (5 Marks)

Answer 1

Central Nervous System : It is hollowed part of the nervous system that lies along the mid dorsal part of the body. It has two parts, brain and spinal cord.
 Peripheral Nervous System : It is solid lateral part of the nervous system that develops from CNS and connects different parts of the body with CNS. Peripheral nervous system has two components, voluntary and involuntary. Voluntary peripheral nervous system is under the control of will. It consists of cranial nerves from brain and spinal nerves from spinal cord. Involuntary peripheral nervous system works independent of will. It develops from some cranial and spinal nerves. Involuntary peripheral nervous system is also called autonomic nervous system. It has two parts, sympathetic and parasympathetic. They control the functioning of various internal body parts.
Protection of brain : Cranium.
Protection of spinal cord : Vertebral column

Answer 2

Answer:

Central Nervous System : It is hollowed part of the nervous system that lies along the mid dorsal part of the body. It has two parts, brain and spinal cord.

 Peripheral Nervous System : It is solid lateral part of the nervous system that develops from CNS and connects different parts of the body with CNS. Peripheral nervous system has two components, voluntary and involuntary. Voluntary peripheral nervous system is under the control of will. It consists of cranial nerves from brain and spinal nerves from spinal cord. Involuntary peripheral nervous system works independent of will. It develops from some cranial and spinal nerves. Involuntary peripheral nervous system is also called autonomic nervous system. It has two parts, sympathetic and parasympathetic. They control the functioning of various internal body parts.

Protection of brain : Cranium.

Protection of spinal cord : Vertebral column