"Animal Movement" Animal Movement and Behavior PPT Courseware 3

Description

"Animal Movement" Animal Movement and Behavior PPT Courseware 3

Animal behavior:

A series of activities that animals perform to help them survive and reproduce.

1. Composition of the motion system

The mammalian locomotor system is composed of bones and muscles.

1. Compare the rabbit skeleton diagram and observe the rabbit skeleton specimens, focusing on the forelimb bones and hind limb bones. What bones are they composed of?

2. Observe the joint pattern diagram

Think about it:

What is the significance of the movement of joints to bones?

Observe the pictures in the book and the pictures on the screen, and discuss and complete all the questions on P29. Record the results of the discussion in a book.

1. Which parts of the large crane are equivalent to the joints of the animal body?

2. In addition to mammals, do the bones of other vertebrates also have joints?

3. Earthworms have muscles in their bodies but no bones. Is this one reason why they cannot move quickly?

4. Which parts of the human body have joints? Which joints are easily injured when doing sports? How should they be protected?

2. Coordination of bones, joints and muscles

1. Changes in the position of bones produce movement, but the bones themselves cannot move. The movement of bones depends on the pulling of skeletal muscles.

2. Skeletal muscle

(1) Skeletal muscles have the characteristic of contracting when stimulated.

(2) Skeletal muscles can only contract and pull the bones but cannot push them apart. Therefore, the muscles connected to the bones are always moved by two groups of muscles in cooperation with each other.

Experience activities: Please raise your arms high, and then extend and bend your elbows to feel which muscles are exerting force?

summary:

1. Exercise is not only accomplished by ————, it requires the control and regulation of ————. It requires the supply of energy, so it also needs the cooperation of —————, —————, —————.

2. Mammals rely on —— to support their bodies, and the bones move around the joints under the traction of ——, allowing the body to complete various actions, thus having developed movement abilities, which is conducive to foraging and avoiding enemies, and to adapt to complex Changing environment.

practise

1. The locomotor system of mammals is ( )

A muscles B bones C muscles and bones D joints

2. What attaches skeletal muscles to bones is ( )

A muscle belly B tendon C blood vessel D muscle cell

3. Changes in the position of bones produce movement. The reason for movement is ( )

A The result of bone's own movement B The result of skeletal muscle contraction and relaxation

C The result of changes in joint position D The result of changes in skeletal muscle position

4. Which of the following is correct ( ).

A. Skeletal muscle consists of two parts: the tendon in the middle and the muscle bellies at both ends.

B. The movement of bones depends on the pulling of skeletal muscles

C. Animal movement is accomplished only by the control and regulation of the motor system and nervous system.

D. All animals have bones in their bodies

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Update Time: 2024-11-22

This template belongs to biology courseware People's Education Edition Biology for Grade 8, Volume 1 industry PPT template

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