Peripheral nervous system

The peripheral nervous system is the system in the body that is most prone to problems. Many vascular diseases and brain diseases are inextricably linked to the peripheral nervous system. It can even be said that the peripheral nervous system is where the neurons of the human body are located. If there is a problem with a person's peripheral nervous system, then the entire person's ganglia and motor end plates will actually be greatly harmed.

So what exactly is the peripheral nervous system? Where is the peripheral nervous system distributed in the human body? Let's take a brief look at the role of the peripheral nervous system and see what role the peripheral nervous system plays in daily life.

Human nervous system. The blue one is the peripheral nervous system (PNS) and the red one is the central nervous system (CNS).

The peripheral nervous system (PNS), also known as the peripheral nervous system, peripheral nervous system, limbic nervous system or peripheral nervous system, is a component of the nervous system, including the nerve parts other than the brain and spinal cord. [1] The brain and spinal cord make up the central nervous system (CNS). Compared to the latter, the peripheral nervous system is not protected by bones and the blood-brain barrier. The peripheral nervous system is divided into the somatic nervous system and the autonomic nervous system.

However, the division between PNS and CNS is not based on their functions. Neurons consist of a cell body and its processes. The cell bodies of motor (responsible for voluntary movement) and autonomic (regulating the functions of internal organs) neurons are both in the CNS. The cell bodies of sensory (sensory) neurons are almost always in the ganglia of the PNS, but they all have processes that send afferents to the CNS. The information is gathered and integrated in the CNS, triggering voluntary or involuntary responses (reflexes). Therefore, the peripheral nervous system is not independent, it is just a morphological division. The exception is the enteric nervous system, which integrates information partially independently of the CNS.

The peripheral nervous system includes:

Cranial nerves Spinal nerves (nerves from the spinal cord) Enteric nervous system

Including its receptors and target organs (such as motor end plates and ganglia).

The above is a brief introduction to the peripheral nervous system. I hope it can be helpful to most people in life. Of course, especially for those who sit in front of the computer for a long time, it is best to check whether their nervous system is healthy and whether there is a possibility of disease, so as to better promote physical and mental health.