"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 5

Description

"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 5

learning target

By studying this section, you will know:

What parts does the nervous system consist of?

What are the main functions of the cerebrum, cerebellum, brainstem, and spinal cord?

What are neurons?

What is the relationship between neurons, nerve fibers and nerves?

1. Composition of the central nervous system

Brain--the most advanced part of the nervous system

Brain: has the functions of managing different parts of the human body.

Cerebellum: Responsible for the coordination of human body movements, coordinating muscle activities, such as walking, running, etc., and maintaining body balance.

Brainstem: Mainly controls the movement of the circulatory system and respiratory system, such as breathing, heartbeat, coughing, etc. It can maintain the normal operation of life activity functions without any conscious interference.

functions of cerebellum

Make movements coordinated and accurate, and maintain body balance

2. Peripheral nervous system

spinal nerve cranial nerve

Nerve cells have many processes, and the long processes are covered with a sheath to form nerve fibers. Nerve fibers have nerve endings at their ends. Nerve endings are gathered into bundles and covered with membrane to form a nerve.

The direction in which neurons conduct impulses

short neurite terminal→neuron cell body→long neurite→long neurite terminal

Classroom training

1. The nervous system includes the brain and spinal cord.

2. Neuron consists of two parts: cell body and process.

3. The central nervous system is the brain.

4. The function of neurons is to receive stimulation.

5. Nerve is the basic unit of structure and function of the nervous system.

fill in the blank

1. Various physiological activities of the human body are mainly completed under the regulation of ( ) system.

2. There are ( ) connections between the brain and various organs of the body, including the spinal cord and limbs.

3. The nervous system is composed of ( ) ( ) and the ( ) they emit.

2. The brain includes two cerebral hemispheres, the left and right hemispheres. The surface is ( ), with about ( ) nerve cells. The functional area with various life activities such as sensation, movement, language, etc. is called ( ).

3. The function of the cerebellum is to make movement ( ), ( ) and maintain the body ( ).

4. The connection path between the brain, trunk and internal organs is ( )

choose

1. Which of the following parts will immediately cause serious disturbances in heartbeat and breathing after being damaged ( ).

A. Cerebellum B. Spinal cord C. Brainstem D. Cranial nerves

2. The axons or long dendrites of neurons and the myelin sheath on the outside are ( ).

A. Nerve B. Nerve fiber C. Nerve ending D. Receptor

3. Among the following statements about neurons, which one is incorrect ( ).

A. Neurons are nerve cells

B. Neurons have the function of receiving stimulation, generating excitement, and transmitting excitement

C. Neuron is the basic unit of the nervous system

D. The dendrites on the cell body of the neuron are the nerve endings

4． Nerve cells are the nervous system ( ).

A. Basic unit of function B. basic unit of structure

C． The basic unit of function and structure D. conductive structure

5. When people are drunk, they walk unsteadily and stand unsteadily. This is because alcohol is anesthetizing ( ).

A. Somatic motor center B. cerebellum

C． Somatosensory center D. Sense organs related to balance

6. The main function of cranial nerves is ( ).

A. Regulate the activity of body organs

B. Contact the nerve centers below the brain to control low-level central activities

C． Regulate the activities of various organs in the head

D． Control the activity of internal organs

Analysis instructions

1. Compared with other cells in the human body, what are the characteristics of the morphological structure of neurons? What is the significance of these characteristics?

In addition to the cell body, neurons also have many processes. The long protrusions are mostly covered with a sheath and form nerve fibers. The tiny branches at the end of nerve fibers are nerve endings. The terminal end of each neuron process is connected to the processes of multiple neurons. These structural and morphological characteristics of neurons are consistent with their physiological functions - receiving stimulation, generating and transmitting excitement (information).

2. If a person's cerebellum is damaged, what will be the manifestations of his movements?

It is characterized by inaccurate speed, range, strength and direction of movement, such as gait disorder and clumsy movements; balance disorder and difficulty in maintaining an upright posture.

3. In daily life, labor and physical exercise, what situations are likely to cause damage to the central nervous system? Can you give some safety advice on this?

In daily life, labor and physical exercise, the main situations that are likely to cause damage to the central nervous system include: external impacts and blows; accidental falls, bruises and bruises; stimulation such as strong light and noise As well as bad habits such as smoking and drinking; staying up late, using your brain excessively, and being unable to sleep well.

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"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 3:

"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 3 Learning Objectives: 1. Describe the composition and function of the nervous system and neurons. 2. Explain that the coordinated movements of various parts of the human body are mainly achieved by the regulation of the nervous system. Between the brain, limbs and eyes, the brain...

"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 2:

"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 2 Learning Objectives: 1. Describe the composition and function of the nervous system and neurons. 2. Explain that the coordinated movements of various parts of the human body are mainly achieved by the regulation of the nervous system. 3. Learn independently first. Self-study and testing (12..

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Update Time: 2024-10-19

This template belongs to biology courseware People's Education Press seventh grade biology book volume 2 industry PPT template

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