"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 4

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"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 4

Analyze the following data

1. An old man suddenly suffered from cerebral thrombosis. Cerebral thrombosis refers to the formation of thrombus due to cerebral arteriosclerosis, narrow blood vessel lumen, and slow blood flow, which affects the blood supply to the local brain. At this time, the old man's limbs did not have any damage, but he became unable to move one limb.

2. An athlete unfortunately fell and injured his waist during a vaulting competition, causing serious damage to his lumbar spinal cord. Despite prompt treatment and no damage to the athlete's lower limbs, he developed paraplegia: loss of motor function in the lower limbs and incontinence of urine and feces.

3. A young man accidentally sprained his waist during labor, causing the right sciatic nerve, the nerve that leads from the lumbar spinal cord to the right lower limb, to be compressed. The young man's right lower limb did not have any damage, but he developed symptoms such as numbness and pain.

4. A woman had a tumor in her brain. The tumor compressed the brain, causing the woman to go blind.

discuss:

1. After reading the above information, what questions do you have?

2. Ask questions about the above information, communicate with classmates, and try to explain it through discussion.

1. Composition of the nervous system

It has multiple nerve centers such as sensory, motor, and language, and regulates various physiological activities of the human body.

Make movements coordinated and accurate, and maintain body balance

There are parts specifically designed to regulate basic life activities of the human body such as heartbeat, breathing, and blood pressure.

It can produce regular responses to external or internal stimuli, and can also conduct responses to these stimuli to the brain. It is the connection pathway between the brain, trunk and internal organs.

Conducts nerve impulses and regulates the activities of various organs in the head.

Conduct nerve impulses, contact nerve centers below the brain, and control low-level central activities.

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.

2. Neurons

Neurons have the function of receiving stimulation, generating excitement, and conducting excitement

1. Neurons, also called nerve cells, are the basic units that constitute the structure and function of the nervous system.

2. Most of the long protrusions are covered with a sheath to form nerve fibers.

3. Nerve fibers are gathered into bundles and covered with membrane to form a nerve.

4. The small branches at the end of nerve fibers are called nerve endings.

There are billions of neurons in the human body. The neurite terminals of each neuron are connected to the neurites of multiple neurons, forming a very complex network. This complex network is the information transmission and processing system in the human body.

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

"The Composition of the Nervous System" Regulation of Human Life Activities PPT Courseware 5 Learning Objectives Through studying this section, you will know: What parts is the nervous system composed of? What are the main functions of the cerebrum, cerebellum, brainstem, and spinal cord? What are neurons? god..

"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: 2024-11-24

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