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17. LOCOMOTION AND MOVEMENT

Movement is a vital feature of all living beings, including various forms such as protoplasmic streaming and locomotion, which occurs primarily in search of resources or safety. The chapter elaborates on the types of movements within human cells, focusing on amoeboid, ciliary, and muscular movements. It highlights the structure and function of muscle types and the skeletal system, noting the importance of muscle contraction mechanisms and the variety of joints facilitating movement.

Sections

  • 17

    Locomotion And Movement

    This section discusses the types of movements in living beings, focusing on human locomotion, muscle types, skeletal structures, and the mechanisms of muscle contraction.

    Learning Practice

  • 17.1

    Types Of Movement

    This section explores the types of movement exhibited by living organisms, particularly focusing on the movements of human cells and the muscular system.

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  • 17.2

    Muscle

    Muscle is a specialized tissue responsible for movement in the body, classified into three main types: skeletal, visceral, and cardiac.

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  • 17.2.1

    Structure Of Contractile Proteins

    This section explores the structure of contractile proteins, particularly actin and myosin, that play vital roles in muscle contraction.

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  • 17.2.2

    Mechanism Of Muscle Contraction

    The mechanism of muscle contraction involves the sliding filament theory, wherein thin filaments slide over thick filaments as a result of neural stimulation.

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  • 17.3

    Skeletal System

    The skeletal system provides a framework of bones and cartilages, enabling movement in the human body.

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  • 17.4

    Joints

    Joints are critical components in the locomotion and movement of the body, allowing various degrees of movement between bones.

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  • 17.5

    Disorders Of Muscular And Skeletal System

    This section covers key disorders affecting the muscular and skeletal systems, including their causes and effects on the body.

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  • 17.6

    Summary

    This section discusses the various types of movements in animals and humans, focusing on muscle types, muscle structure, and the skeletal system's role in locomotion.

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  • 17.7

    Exercises

    This section covers exercise questions to reinforce knowledge on movement, muscles, skeletal systems, and related concepts.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Movement is essential for s...
  • There are three main types ...
  • The skeletal system provide...

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