What Are the Different Functions of the Nervous System?

The main function of the nervous system is to play a leading role in the human body. On the one hand, it controls and regulates the activities of various organs and systems, so that the human body becomes a unified whole; on the other hand, through the analysis and synthesis of the nervous system, the body responds to the stimulus of environmental changes accordingly to achieve the unity of the body and the environment . The basic form of activity of the nervous system in regulating physiological functions is reflex. The high development of the human brain makes the cerebral cortex the highest-level part that controls the whole body's functions, and has physiological functions such as thinking and consciousness.

The main function of the nervous system is to play a leading role in the human body. On the one hand, it controls and regulates the activities of various organs and systems, so that the human body becomes a unified whole; on the other hand, through the analysis and synthesis of the nervous system, the body responds to the stimulus of environmental changes accordingly to achieve the unity of the body and the environment . The basic form of activity of the nervous system in regulating physiological functions is reflex. The high development of the human brain makes the cerebral cortex the highest-level part that controls the whole body's functions, and has physiological functions such as thinking and consciousness.

Chinese name

Nervous system function

Foreign name

nervous function

Department

Neurology

Nervous System Function I. Nervous System:

Nervous System Function Introduction:

It is a system that plays a leading role in the regulation of physiological functions in the body. It is mainly composed of neural tissues and is divided into two parts: the central nervous system and the peripheral nervous system. The central nervous system includes the brain and spinal cord, and the peripheral nervous system includes the cerebral and spinal nerves.

Nervous System Function Central Nervous System:

1 Introduction:

The central nervous system is composed of the brain and spinal cord (the brain and spinal cord are the central parts of various reflex arcs) and is the most important part of the human nervous system. The central nervous system accepts incoming information from all parts of the body. After it is integrated and processed, it becomes a coordinated motorized outgoing, or it is stored in the central nervous system and becomes the neural basis of learning and memory. Human thinking activity is also a function of the central nervous system.

2. Development:

A single human fertilized egg develops into an individual, and the development process is complicated: from a single cell to millions of cells with special functions to tens of billions of cells in a mature individual, and this complex apex is the central nerve Phylogeny. The central nervous system is formed by the development of the ectoderm of the embryo. At the stage of the neuroblast, the chordal cord runs through the central axis of the early embryo, and induces the undifferentiated ectoderm cells above it to transform into the primordium of the central nervous system. First, the dorsal ectodermal cells above the spinal cord are elongated and thickened to form a neural plate that is wide anteriorly and narrowly; the edge of the neural plate is thickened and pleated to form a neural fold; the central depression of the neural plate forms a neural groove. Then, the nerve fold moves toward the dorsal midline, and finally closes to form a neural tube, which develops into the brain at the front and spinal cord at the back. From this stage on, the general characteristics of the brain are determined by the growth and bending of the front part of the neural tube. With the gradual enlargement of the cerebral cortex and the generation of cortical folds, a mature brain is formed.

Nervous System Function

1 Introduction:

The peripheral nervous system (referred to as PNS) is a nerve that is issued by the central nervous system and guides various parts of the human body. It can be divided into somatic nervous system and visceral nerve according to different objects. The peripheral nervous system is responsible for communicating with various parts of the body, and plays the role of transmitting and receiving information.

2. Nerve nerve:

The nerves connected to the brain are called brain nerves. There are 12 pairs of nerves. Most of them are located in the sensory organs, skin, and muscles of the head. Internal organs.

3 Spinal nerve:

The nerve connected to the spinal cord is called the spinal nerve, with a total of 31 pairs. The spinal nerve regulates the feel and movement of the trunk and limbs. The upper spinal nerve is distributed in the neck, upper limbs, and upper trunk; the lower spinal nerve is distributed in the lower limbs and lower trunk; it is regularly distributed in the skin and muscles of the trunk, limbs.