"Animal Movement" Animal Movement and Behavior PPT Courseware 5

"Animal Movement" Animal Movement and Behavior PPT Courseware 5

Scenario setting

What are these animals doing?

Predation, courtship, migration

Why do they do this?

To survive and reproduce

Happy clicking

The series of activities performed by animals that are beneficial to their survival and reproduction are called animal behaviors.

focus focus

Animal movement is a specific manifestation of animal behavior, and the movement of animals depends on a certain body structure. Movement is mainly completed by the movement system.

The difference between bone and bone

A whole set of many bones connected in a certain way to form a certain part of the body is called a skeleton. For example, the upper limb bones are bones, because they are a whole composed of many bones such as the ulna and radius; the adult skeleton is composed of 206 bones connected in different ways. The individual pieces are bones, such as humerus, ribs, etc.

joint

Characteristics of joints: 1. Flexible; 2. Firm.

The inner wall of the joint capsule can secrete synovial fluid, which lubricates the smooth and elastic articular cartilage. The articular cartilage can reduce the friction between the two bones and buffer the vibration during movement, so the joints are very flexible.

The joint capsule is made of tough connective tissue, and is also attached with many ligaments, which firmly connect two adjacent bones together, so the joint is very strong.

skeletal muscle

Muscle belly: the thicker part in the middle

Tendon: The thin, milky white parts at both ends. Tendons can go around joints and connect to different bones.

Skeletal muscles are composed of muscle bellies and tendons. Skeletal muscles have the property of contracting when stimulated

Thinking: What significance does the movement of animals have to the survival of animals?

Tip: Mammals rely on their limbs to support their bodies, and the bones move around the joints under the traction of muscles, allowing the body to complete various movements. Therefore, it has developed movement abilities, which is conducive to foraging and avoiding enemies, so as to adapt to complex and changeable environments.

Try your hand

1. The structure that connects skeletal muscles to bones is ( )

A. joint b. ligament

C. Joint capsule D. tendon

2. Paralysis of skeletal muscles in a certain part of the human body may be caused by ( )

A. Skeletal muscle fatigue

B． Damage to the nerves that control skeletal muscles

C. chronic lack of exercise

D. Damage to certain muscle fibers of skeletal muscles

3. Mammals need energy during exercise. The main sources of energy are ( )

①Respiratory system ②Reproductive system ③Nervous system ④Digestive system ⑤Endocrine system ⑥Circulatory system

A. ①②④ B． ①③⑤ C． ①④⑥ D. ②③⑤

Speak freely

Xiao Wang loves sports, and he completes various activities very seriously in physical education class. After a period of time, he was pleasantly surprised to find that participating in more sports not only made his body stronger and healthier, but also made his mind more flexible than before. Do you think sports can make the mind more flexible? Please briefly explain your reasons. What other aspects of physical and mental changes do you think physical exercise can bring about?

harvest garden

Tell me what did you learn from this class?

What’s your experience?

What do you think?

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