"The movement of animals depends on certain structures" PPT courseware

"The movement of animals depends on certain structures" PPT courseware

Part One: Animal Movement Organs

discuss:

What are the locomotion structures of single-celled animals?

What are the locomotor organs of multicellular animals?

Locomotor organ of single-celled organisms

Amoeba relies on pseudopods for movement

Paramecia move by cilia swinging

Movement organs of multicellular organisms

bird wings

The bird's forelimbs are specialized into wings, which are covered with hard feathers and have characteristics suitable for flight. The shape of the wings is determined by the feathers, which enable the bird to fly.

bear limbs

Bears have well-developed limbs, which are their main organs for locomotion.

fish fins

Most fish have dorsal fins, pectoral fins, pelvic fins, anal fins, and tail fins, which are the movement organs of fish.

butterfly wings

Insect wings develop from lateral dorsal leaves that expand to both sides. Insect wings are very flexible and can be folded on the back of the body when not in use. The wings are generally triangular in shape.

Self test:

1. There are many animals that rely on special organs to fly and glide. Among the following animals, the flight organs are different from other animals ( )

A. Foot moth B. Butterfly C. Locust D. Bat

Observe the ants’ locomotion organs and steps

Ants have segmented feet that rely on the contraction and relaxation of foot muscles to move the segmented feet.

The movement of animals depends on a certain structure PPT, part two: the movement system of vertebrates

The difference between bone and bone:

Bone: generally refers to a single bone

Skeleton: includes bones and bone connections (joints)

The difference between joints and bone connections:

The connection between bones is called bone connection. Some bone connections are immobile, such as the connections between bones in the brain and skull. There is also a kind of movable joint, which is commonly known as a joint. Joints are the main form of bone connection.

The movement of animals depends on a certain structure PPT, the third part of the content: I can do it:

1. What controls skeletal muscles to contract is ( )

A The blood vessels inside the muscle B The tendons at both ends of the muscle

C Nerves distributed by muscles D Connective tissue membrane outside muscles

2. When people perform elbow flexion movements, the muscles that contract to cause movement are mainly ()

A Biceps brachii B Triceps brachii C Contractor muscle D Dlaxator muscle

Analyze how the biceps and triceps coordinate in the following movements?

①Two classmates wrenches

① The biceps brachii contracts and the triceps brachii relaxes at the same time

②The process of pushing out the shot put

②The biceps relax and the triceps contract at the same time

③Carry a bucket of water

③All shrink

④Hands hang naturally

④ All are relaxed

Keywords: Jiangsu Education Edition eighth grade biology PPT courseware free download, animal movement depends on a certain structure PPT download, .PPT format;

For more information about the PPT courseware "The Movement of Animals, the Movement of Animals Depends on a Certain Structure," please click the "Movement of Animals, PPT, The Movement of Animals Depends on a Certain Structure," PPT tag.

"The movement of animals depends on certain structures" PPT:

"The movement of animals depends on certain structures" PPT Part 1 content: Learning objectives: 1. Give examples of the movement structure of animals 2. Give examples of the composition and function of the movement system of vertebrates The movement structure of animals The movement structures of single-cell animals are Which ones? many..