Class 11 Biology — Chapter 17: LOCOMOTION AND MOVEMENT

What you'll learn

• ▸Types of Movement
• ▸Classification of Muscles
• ▸Structure of a Skeletal Muscle
• ▸The Sarcomere
• ▸Structure of Contractile Proteins
• ▸Sliding Filament Theory of Muscle Contraction

Chapter Summary

--- PAGE 1 --- 11080CH20 CHAPTER 17 LOCOMOTION AND MOVEMENT 17.1 Types of Movement 17.2 Muscle 17.3 Skeletal System 17.4 Joints 17.5 Disorders of Muscular and Skeletal System Movement is one of the significant features of living beings. Animals and plants exhibit a wide range of movements. Streaming of protoplasm in the unicellular organisms like Amoeba is a simple form of movement. Movement of cilia, flagella and tentacles are shown by many organisms. Human beings can move limbs, jaws, eyelids, tongue, etc. Some of the movements result in a change of place or location. Such voluntary movements are called locomotion. Walking, running, climbing, flying and swimming are all some forms of locomotory movements. Locomotory structures need not be different from those affecting other types of movements. For example, in Paramoecium, cilia helps in the movement of food through cytopharynx and in locomotion as well. Hydra can use its tentacles for capturing its prey and al…

Practice Questions from this Chapter

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1. Explain how muscles move bones. Get Solution →
2. Describe the fastest animal movement. Get Solution →
3. Illustrate different types of human joints. Get Solution →
4. What are voluntary movements that result in a change of place or location called? Get Solution →
5. Which of the following is a main type of movement exhibited by cells of the human body? Get Solution →
6. Which tissue is of mesodermal origin and makes up 40-50% of an adult human's body weight? Get Solution →
7. What are skeletal muscles also known as due to their striped appearance under a microscope? Get Solution →
8. The plasma membrane lining a muscle fiber is called the: Get Solution →

Did you know?

• 💡 The human body has over 600 muscles controlling every move.
• 💡 Muscles only pull, they never push anything.
• 💡 The strongest muscle in your body by weight is the jaw muscle.
• 💡 A hummingbird can beat its wings up to 80 times per second.
• 💡 A snail moves by gliding on a single muscular foot.

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