"Human Immunity" PPT teaching courseware

Description

"Human Immunity" PPT teaching courseware

Part 1: Importing new lessons

There are many pathogens in the natural environment where people live. Once these pathogens invade the human body, they may cause diseases and damage people's health. Why can people live healthily in an environment with a large number of pathogens?

learning target

1. Describe the immune function of the human body;

2. Give examples of the difference between specific immunity and non-specific immunity of the human body;

3. Explain the significance of planned immunization; cultivate the ability to use learned biological knowledge to analyze and solve problems encountered in real life.

Human immunity PPT, part 2 content: new lesson learning

1. Non-specific immunity and specific immunity

1. Non-specific immunity

When pathogens invade the human body, the barrier function of the skin and mucous membranes

2. Specific immunity

Discussion: Why can people who have had chickenpox resist the invasion of the chickenpox virus?

What do antigen and antibody mean respectively?

(1) Antibodies: After a pathogen invades the human body, it stimulates lymphocytes, and the lymphocytes produce a special protein called an antibody that resists the pathogen.

(2) Antigen: a substance that causes the body to produce antibodies (such as pathogens and other foreign matter).

(3) Specific immunity: produced after birth and only works against a specific pathogen.

think about it

1. When grafting skin on a patient with severe burns, should the patient's own healthy skin be used or someone else's healthy skin? Why?

2. Why do some people have allergic reactions in life?

3. Vaccination can effectively enhance the body’s immunity. Which vaccines have you ever received?

2. Planned Immunization

Planned immunization: In accordance with national requirements for the elimination of infectious diseases, vaccination is carried out in a planned manner among susceptible groups.

Human immunity PPT, part 3: in-class training

1. Among the following options, which one belongs to specific immunity ( )

A． Skin and mucous membranes block pathogens from invading the body

B. Antibodies against the corresponding pathogen

C． Lysozyme dissolves germs

D. White blood cells engulf and digest pathogens

2. Animals often lick their wounds with a tongue full of saliva, which is beneficial to wound healing. Among the following options, the immune type is the same as this ( )

A. Taking sugar pills to prevent polio

B. Vaccination with BCG vaccine to prevent tuberculosis

C. White blood cells phagocytose germs that invade the tissue

D. Inject hepatitis B vaccine

3． When H1N1 was raging and the vaccine was not in sufficient supply, the government first provided H1N1 vaccines to hospital medical staff and school teachers and students. The immunity types of influenza A vaccine and injection of influenza A vaccine respectively belong to ( )

A. Antigen, non-specific immunity B. Antibody, specific immunity

C. Antigen, specific immunity D. Antibody, non-specific immunity

4． During organ transplantation, the patient's immune system will reject the foreign organ to varying degrees. The transplanted organ is equivalent to ( )

A.Antigen B.Antibody

C. Protein D. Growth hormone

Keywords: Beijing Normal University Edition Biology PPT courseware for seventh grade volume 2 free download, human immunity PPT download, .PPT format;

For more information about the "Healthy Living Human Immunity" PPT courseware, please click the Healthy Living ppt Human Immunity ppt tag.

"Human Immunity" PPT courseware download:

"Human Immunity" PPT courseware download Part One: Situation Introduction There are many pathogens in the natural environment where people live. Once these pathogens invade the human body, they may cause diseases and damage people's health. Why can people survive in an environment where a large number of pathogens exist...

"Human Immunity" PPT download:

"Human Immunity" PPT Download Part One Content: New Lesson Knowledge Points Knowledge Point 1 Human immunity includes non-specific immunity and specific immunity 1. Non-specific immunity (1) Concept and characteristics Non-specific immunity is innate and is responsible for many types of immunity. Pathogens all work, but...

"Human Immunity" PPT courseware:

"Human Immunity" PPT courseware Part 1: Teaching objectives: Master the knowledge of the three lines of defense of the human body to defend itself. Understand the concept and function of immunity, and distinguish between non-specific immunity and specific immunity of the human body. Explain the meaning of planned immunization... ... ... people...

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Update Time: 2024-09-08

This template belongs to biology courseware Beijing Normal University Edition Seventh Grade Biology Volume 2 industry PPT template

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