The Two Structural Divisions of the Nervous System: CNS and PNS

The Two Structural Divisions Of The Nervous System Are The: – The nervous system, the control center of our bodies, comprises two distinct structural divisions: the central nervous system (CNS) and the peripheral nervous system (PNS). Together, they orchestrate the intricate communication network that governs our thoughts, actions, and sensory experiences.

The CNS, encased within the protective skull and vertebral column, serves as the command center, receiving and processing sensory information while initiating motor responses. The PNS, on the other hand, extends beyond the CNS, transmitting signals to and from the body’s organs and tissues.

Central Nervous System (CNS)

The central nervous system (CNS) is the main coordinating center of the nervous system, receiving and processing sensory information from the body and sending out motor commands to control movement and other bodily functions.

The CNS is made up of the brain and spinal cord, which are protected by the skull and vertebral column, respectively.

Protective Structures of the CNS

The skull is a hard, bony structure that encloses the brain, protecting it from injury. The vertebral column is a flexible, bony structure that encloses the spinal cord, protecting it from injury and providing support for the body.

The two structural divisions of the nervous system are the central nervous system and the peripheral nervous system. Hydrogen bonds are a major factor in the structure of both of these systems. In the central nervous system, hydrogen bonds help to hold together the neurons that make up the brain and spinal cord.

In the peripheral nervous system, hydrogen bonds help to hold together the nerves that connect the brain and spinal cord to the rest of the body. Hydrogen bonds are also important for the function of the nervous system. They help to transmit electrical signals between neurons and they also help to regulate the release of neurotransmitters.

Diagram of the CNS

The CNS can be divided into two main parts: the brain and the spinal cord.

• The brain is the main control center of the nervous system, receiving and processing sensory information from the body and sending out motor commands to control movement and other bodily functions.
• The spinal cord is a long, thin bundle of nerves that runs from the brain down the back, carrying sensory and motor information between the brain and the rest of the body.

Peripheral Nervous System (PNS)

The peripheral nervous system (PNS) is the division of the nervous system that connects the central nervous system (CNS) to the rest of the body. It is responsible for transmitting sensory information from the body to the CNS and motor commands from the CNS to the muscles and glands.

The PNS is divided into two divisions: the somatic nervous system and the autonomic nervous system.

Somatic Nervous System

The somatic nervous system is responsible for voluntary movement and sensation. It consists of the nerves that connect the CNS to the skeletal muscles and the sensory receptors in the skin, muscles, and joints.

Autonomic Nervous System, The Two Structural Divisions Of The Nervous System Are The:

The autonomic nervous system is responsible for involuntary functions such as heart rate, blood pressure, digestion, and respiration. It consists of the nerves that connect the CNS to the smooth muscles and glands in the body.

End of Discussion: The Two Structural Divisions Of The Nervous System Are The:

Understanding the structural organization of the nervous system unveils the intricate mechanisms that govern our physical and cognitive functions. From the hierarchical arrangement of neurons to the specialized roles of glial cells, the nervous system’s architecture reflects its remarkable complexity and adaptability.