"Body Temperature Control" PPT

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"Body Temperature Control" PPT

Part One: Review before class

1. Animal behavior: __________ and __________.

2. The innate sexual behavior of animals is a kind of __________, a fixed behavior controlled by genetics, and a low-level __________.

3. The acquired behavior of animals can only be acquired after going through __________, and it is an individual sexual behavior that requires __________ participation.

4. Human learning behavior is more complex. People can use __ and __ to learn, and can use them to replace stimuli and respond.

body temperature control

The highest temperature on the earth can reach 56.8°C, and the lowest temperature can drop to -89.2°C. However, human footprints are all over the world, so how important is it for people to control their body temperature in different environments? How do the animals living there maintain a constant body temperature?

Body temperature control PPT, part 2: thinking

What are the benefits of maintaining a constant body temperature?

Maintaining a normal body temperature is the normal metabolism of warm-blooded animals.

How do animals maintain a relatively stable body temperature?

The ability of warm-blooded animals to maintain a stable body temperature is the result of the body's two physiological processes, ____ and ____.

Body temperature control PPT, the third part: summary:

1. There are differences in body temperature among people of different ages. Generally, young people have a higher body temperature than older people.

2. There are individual differences in body temperature between genders. Generally, women's body temperature is slightly higher than that of men.

3. Body temperature will change due to changes in activity level, mental state, and environmental temperature. etc.

Body temperature control PPT, part 4: after-class exercises:

1. During strenuous exercise, what are the parts that produce heat? How does the human body prevent damage caused by overheating?

Answer: (1) Skeletal muscle.

(2) The human body prevents overheating damage by directly dissipating heat and increasing the heat dissipation through sweat evaporation. At the same time, humans also have ventilation, cooling and other means.

2. What are the ways the human body dissipates heat?

Most of it is lost through the skin through radiation, conduction, convection and evaporation, while a small part is lost through physiological processes such as breathing, urination, and defecation.

3. The human body can maintain a constant body temperature because, under the regulation of the nervous system, ()

A． The heat generation and heat dissipation processes are balanced

B. Balance between skeletal muscle heat production and direct heat dissipation

C. Balance between direct heat dissipation and evaporative heat dissipation

D. The balance between visceral heat production and evaporative heat dissipation

4. People in cold environment ()

A． Skin blood vessels dilate, blood flow increases, and heat dissipation increases

B. Skin blood vessels constrict, blood flow decreases, and heat dissipation increases

C. Skin blood vessels dilate, blood flow increases, and heat dissipation decreases

D. Skin blood vessels constrict, blood flow decreases, and heat dissipation decreases

Keywords: Zhejiang Education Edition eighth grade science PPT courseware free download, body temperature control PPT download, .PPT format;

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Update Time: 2024-11-19

This template belongs to science courseware Zhejiang Education Edition Eighth Grade Science Volume 1 industry PPT template

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