Broadly speaking, the nervous system is organised into two main parts, the central nervous system (CNS) and the peripheral nervous system (PNS). The CNS is the processing centre of the body and consists of the brain and the spinal cord .
What is the central nervous system?
The central nervous system comprises the brain and spinal cord . The peripheral nervous system includes all peripheral nerves.
Why are the brain and spinal cord called the central nervous system?
The central nervous system consists of the brain and spinal cord. It is referred to as “central” because it combines information from the entire body and coordinates activity across the whole organism .
Why is the spinal cord an essential part of the central nervous system?
The central nervous system CNS is responsible for integrating sensory information and responding accordingly. It consists of two main components: The spinal cord serves as a conduit for signals between the brain and the rest of the body . It also controls simple musculoskeletal reflexes without input from the brain.
What is another name for the central nervous system?
the part of the nervous system comprising the brain and spinal cord. Also called cerebrospinal nervous system .
What are the 3 functions of the central nervous system?
Remaining neurons, and associated cells, distributed throughout the body form the PNS. The nervous system has three broad functions: sensory input, information processing, and motor output .
What is the main function of the central nervous system?
The central nervous system (CNS) controls most functions of the body and mind . It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.
Is spinal cord part of brain?
The base, or lower part, of the brain is connected to the spinal cord . Together, the brain and spinal cord are known as the central nervous system (CNS). Many nerves send electrical signals to and from the brain and spinal cord.
What is nervous system with diagram?
The Central Nervous System is the integration and command center of the body. It consists of the brain, spinal cord and the retinas of the eyes. The Peripheral Nervous System consists of sensory neurons, ganglia (clusters of neurons) and nerves that connect the central nervous system to arms, hands, legs and feet.
What diseases affect the central nervous system?
- Alzheimer’s disease. Alzheimer’s disease affects brain function, memory and behaviour. ...
- Bell’s palsy. ...
- Cerebral palsy. ...
- Epilepsy. ...
- Motor neurone disease (MND) ...
- Multiple sclerosis (MS) ...
- Neurofibromatosis. ...
- Parkinson’s disease.
What is the function of spinal cord in nervous system?
The brain and spinal cord are your body’s central nervous system. The brain is the command center for your body, and the spinal cord is the pathway for messages sent by the brain to the body and from the body to the brain .
Which spinal nerves affect which parts of the body?
The nerves of the cervical spine go to the upper chest and arms . The nerves in your thoracic spine go to your chest and abdomen. The nerves of the lumbar spine then reach to your legs, bowel, and bladder. These nerves coordinate and control all the body’s organs and parts, and let you control your muscles.
What are the four major components of the central nervous system?
| CNS | Brain | Telencephalon | Mesencephalon | Rhinencephalon, Amygdala, Hippocampus, Neocortex, Basal ganglia, Lateral ventricles | Tectum, Cerebral peduncle, Pretectum, Mesencephalic duct |
|---|
What is the opposite of the nervous system?
The autonomic nervous system can be divided into sympathetic and parasympathetic nervous systems . Simply, the sympathetic and parasympathetic nervous systems have opposite actions.
What is in the peripheral nervous system?
The peripheral nervous system refers to parts of the nervous system outside the brain and spinal cord. It includes the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions .
What is the cerebrospinal nervous system?
: the portion of the nervous system in vertebrates comprising the brain, cranial nerves, spinal cord, and the spinal nerves concerned with transmission of impulses from sense organs to the voluntary muscles — compare autonomic nervous system.
