"Animal Movement" Animal Movement and Behavior PPT Courseware 8

"Animal Movement" Animal Movement and Behavior PPT Courseware 8

learning target:

1. How animals move

2. Composition of motion system

3. How is exercise accomplished?

4. The significance of animal movement

Think about it, discuss it

Animals are generally free to move, and they move in a variety of ways, with widely varying speeds.

Think about it, what are the differences between the locomotor organs of insects, fish, birds and mammals? Some people say that animal movement essentially relies on muscle contraction. Do you agree with this statement?

Animal movement essentially relies on muscle contraction, but jellyfish have no muscles, but they can still move.

Self-Study Guide 1 P42~43 Observation and Thinking Discussion Questions

1. What is the structural relationship between bones, joints and muscles? How do the three cooperate to produce movement?

2. What is the significance of joints to the movement of bones? If we use the door of a room as an analogy, what structure does it correspond to on the door?

3. Earthworms have muscles but no bones. Is this why it cannot move quickly?

4. Give examples of which parts of the human body have joints. Which joints are most likely to be injured when playing sports? How should it be protected?

test you

Arthritis is a common disease. The patient has a large amount of fluid in the joint cavity and is accompanied by swelling and pain. Which of the following structures should the lesion be located on? ( )

A. Articular surface B. Articular cartilage

C.Joint capsule D.Joint cavity

Because the inner surface of the joint capsule can secrete synovial fluid into the joint cavity, if the secreted synovial fluid is abnormal, arthritis will occur.

What are muscle bellies? What is a tendon?

The thicker part in the middle of the muscle is called the muscle belly, and the thinner, milky white parts at both ends are called tendons.

1. What is the structural relationship between bones, joints and muscles? How do the three cooperate to produce movement?

The connections of bones form joints, and muscles attach to bones.

The contraction of the muscles pulls the bones and rotates them around the joints, thus producing movement.

2. What is the significance of joints to the movement of bones? If we use the door of a room as an analogy, what structure does it correspond to on the door?

As a fulcrum, it reduces the friction between bones and facilitates movement.

Equivalent to the door shaft (hinge) on the door.

3. Earthworms have muscles but no bones. Is this why it cannot move quickly?

Earthworms have muscles but no bones, which is an important reason why they cannot move quickly.

The movement of bones increases the change in body movement distance.

Self-study guide 2 P44 (3 minutes)

1. What are the components of the motion system?

2. How does movement come about?

3. How do the skeletal muscles cooperate when flexing the elbow?

3. What is the significance of exercise to animal survival?

generation of movement

Changes in the position of the bone produce movement, but the bone itself cannot move. Who pulls it to move?

skeletal muscle traction bone movement

How do skeletal muscles affect bone movement?

When skeletal muscles contract under stimulation from nerves, they will move the bones around the joints, causing the corresponding parts of the body to move.

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

1. Decide whether the following statements are correct. Draw "√" for the correct one and "×" for the wrong one.

(1) The locomotor system of mammals is composed of bones and muscles. ( )

(2) As long as the motor system is intact, animals can move normally. ( )

3. When you perform any action, the following steps will be included;

① The corresponding bone is pulled, ② the bone rotates around the joint, ③ the skeletal muscle receives the excitement from the nerve, ④ the skeletal muscle contracts. The correct order in which these steps occur ( )

A. ①②③④; B②①③④; C ③④①②; D④①②③.

4. Based on what you learned about the movement of mammals in this section, guess whether both ends of the bird's pectoral muscles are attached to the sternum? Why?

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