"Skin and Sweat Secretion" PPT courseware

Description

"Skin and Sweat Secretion" PPT courseware

Part 1: The structure of the skin

epidermis

stratum corneum protection

germinal layer regeneration

Dermis - composed of dense connective tissue, containing a large number of elastic fibers and collagen fibers, as well as abundant blood vessels and sensory nerve endings.

Skin appendages: hair, sebaceous glands, sweat glands, nails

PPT on skin and sweat secretion, part 2: applying what you learn

1. A skin test (allergy test) is required before injecting penicillin. Why does it feel so painful?

The dermis is rich in sensory nerve endings.

2. Someone needs a skin transplant due to extensive burns. Which layer of skin cells should be included in the transplanted skin?

Germinal layer cells.

Apply what you learn

1. Athletes often sweat a lot when competing. Should they drink boiled water or light salt water? Why?

It is better to drink light salt water.

Replenish the water and inorganic salts lost in the body.

2. Which layer of animal skin is mainly used in the leather clothes and shoes that people wear?

Genuine Leather

3. "People drink more water than they urinate in a day." Please explain the reason.

In addition to excreting water from the body through urine every day, people also expel some water through breathing. When the weather is hot, sweat is also a way for people to expel water. The amount of water a person takes in and the amount of water excreted every day is balanced. Therefore, the amount of water a person drinks in a day should be more than the amount of urine.

Skin and sweat secretion PPT, part 3: compliance assessment

1. The structure of the skin does not include ( )

A epidermis B dermis C subcutaneous tissue D germinal layer

2. The thick skin on human palms is commonly known as "callus", and its significantly thickened part belongs to ( )

A germinal layer B stratum corneum C subcutaneous fat D dermis

3. Blood flows out after skin abrasion. This is because the blood vessels in ( ) are abraded.

A stratum corneum B germinal layer C epidermis D dermis

4. When TV media advertises skin cleansing products, the advertisements will mention that human skin is often in contact with germs. The structure that prevents germs from invading the human body is ( ).

A stratum corneum B germinal layer C subcutaneous fat D dermis

Keywords: Beijing Normal University Edition Biology PPT courseware for seventh grade volume 2 free download, skin and sweat secretion PPT download, .PPT format;

For more information about the PPT courseware "Discharge of Human Metabolic Wastes from the Skin and Sweat Secretion", please click the Discharge of Human Metabolic Wastes ppt Skin and Sweat Secretion ppt tag.

"Skin and Sweat Secretion" PPT courseware download:

Download the first part of the PPT courseware "Skin and Sweat Secretion": Introduction to the new lesson Skin is exposed to the outside all year round and exposed to many bacteria, so why doesn't it rot and deteriorate? Some people's skin is whiter than snow, and some people's skin is as black as charcoal. Why are the skin colors of the human body different? What is acne...

"Skin and Sweat Secretion" PPT download:

"Skin and Sweat Secretion" PPT download part one content: Course knowledge points Knowledge point 1 Epidermis and dermis constitute the skin 1. Observe the structure of the skin 2. The structure and function of the skin 3. Appendages of the skin hair, sweat glands, sebaceous glands, fingers ( Toes) nails, etc. 【example】..

"Skin and Sweat Secretion" PPT:

"Skin and Sweat Secretion" PPT Part One Content: Situation Introduction Skin is exposed to the outside all year round and exposed to many bacteria. Why does it not rot and deteriorate? Some people's skin is whiter than snow, and some people's skin is as black as charcoal. Why are the skin colors of the human body different? What is the cause of acne? What’s the reason? Man-made..

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Update Time: 2024-07-29

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

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