The nervous system as a whole is divided into two subdivisions: the central nervous system (CNS) and the peripheral nervous system (PNS).
What are the subdivisions of the central nervous system?
The central nervous system (defined as the brain and spinal cord) is usually considered to have seven basic parts: the spinal cord, the medulla, the pons, the cerebellum, the midbrain, the diencephalon, and the cerebral hemispheres (Figure 1.10; see also Figure 1.8).
What are the three main subdivisions of the nervous system?
Key Points
- The nervous system is often divided into components called gray matter and white matter. …
- The peripheral nervous system is subdivided into nerves, the autonomic system, and the somatic system. …
- The enteric nervous system is an independent subsystem of the peripheral nervous system.
What are two main functional subdivisions of the nervous system?
Each subdivision has structural and functional characteristics that distinguish it from the others. The nervous system as a whole is divided into two subdivisions: the central nervous system (CNS) and the peripheral nervous system (PNS).
Which organ is part of our nervous system?
The brain and the spinal cord are the central nervous system. The nerves that go through the whole body make up the peripheral nervous system.
What is the cause of nervous system disorders?
Some serious conditions, diseases, and injuries that can cause nervous system problems include: Blood supply problems (vascular disorders). Injuries (trauma), especially injuries to the head and spinal cord. Problems that are present at birth (congenital).
What is the main function of the nervous system?
The nervous system is the major controlling, regulatory, and communicating system in the body. It is the center of all mental activity including thought, learning, and memory. Together with the endocrine system, the nervous system is responsible for regulating and maintaining homeostasis.
What kind of cell performs the main function of nervous system?
Neurons are the primary type of cell that most anyone associates with the nervous system. They are responsible for the sensory, integrative, and motor functions of the nervous system. They are electrically active and release chemical signals to target cells.
How do you explain the nervous system?
The nervous system controls everything you do, including breathing, walking, thinking, and feeling. This system is made up of your brain, spinal cord, and all the nerves of your body. The brain is the control center and the spinal cord is the major highway to and from the brain.