Central

Central Nervous System

The central nervous system (CNS) is a fundamental part of the nervous system in humans and other vertebrates. It consists of the brain and the spinal cord. The CNS is responsible for processing and transmitting information throughout the body and is crucial for coordinating bodily functions.

Structure

Brain

The brain is the control center of the CNS and is located within the cranial cavity. It is divided into several major parts:

• Cerebrum: The largest part of the brain, responsible for higher brain functions such as thought, action, and emotion.
• Cerebellum: Located under the cerebrum, it is involved in coordination of movement and balance.
• Brainstem: Connects the brain to the spinal cord and controls basic life functions such as breathing, heartbeat, and blood pressure.

Spinal Cord

The spinal cord is a long, thin, tubular structure that extends from the brainstem down through the vertebral column. It is responsible for transmitting neural signals between the brain and the rest of the body.

Function

The CNS processes sensory information received from the peripheral nervous system (PNS) and coordinates the body's response. It is involved in:

• Sensory processing: Interpreting signals from sensory organs.
• Motor control: Initiating and regulating movement.
• Cognitive functions: Including memory, attention, and problem-solving.
• Homeostasis: Maintaining internal stability in the body.

Disorders

Disorders of the CNS can have significant impacts on health and quality of life. Some common CNS disorders include:

• Multiple sclerosis: A disease where the immune system attacks the protective sheath (myelin) that covers nerve fibers.
• Parkinson's disease: A neurodegenerative disorder that affects movement.
• Alzheimer's disease: A progressive disease that destroys memory and other important mental functions.

Research and Advances

Research in the field of CNS is ongoing, with advances in understanding the molecular and genetic basis of CNS disorders. New treatments and therapies are being developed to improve outcomes for patients with CNS conditions.

See Also

• Peripheral nervous system
• Neurotransmitter
• Neuroplasticity