Selina Solutions for Class 9 Biology Chapter 12 - Skeleton - Movement and Locomotion

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Selina Solutions for class 9 Biology Chapter 12 – Skeleton – Movement and Locomotion

ICSE Class 9 Biology Chapter 12 – Skeleton – Movement and Locomotion chapter is classified under Unit – V – Human anatomy and physiology. Human anatomy deals with the study of the different structure of the human body while human physiology deals with the functions of the different parts of the body.

Both the fields of study are so closely associated that it is often difficult to differentiate and study them separately.

Human physiology is referred to the mechanical, physical and biochemical functionalities of humans which inter-links medicine, health and science to depict the acquaintance of the body to various physical phenomena, diseases and other external factors influencing the body.

This chapter takes the students through the skeletal system of the human body, the importance of the skeleton system, its various constituents, the ultrastructure of different parts such as bones, joints, muscles and so on.

The different types of questions that are covered in this chapter are:

• Multiple-choice questions
• Fill in the blanks
• State whether true/false
• Short answer type questions
• Long answer type questions
• Match items in Column I & II

List of subtopics covered in Chapter 12 – Skeleton – Movement and Locomotion

List of Exercise

Selina Solutions for class 9 Biology Chapter 12 – Skeleton – Movement and Locomotion

The chapter draws the attention of students towards the fundamentals of the skeletal system of the human body. The skeletal system provides the body with a definite shape and framework thereby protecting the delicate organs of the body.

Students get enlightened about various constituents of the skeleton system, the axial skeleton and the appendicular skeleton, girdles, joints – different types of joints, muscles – different kinds of muscles. It also enlightens students about the level mechanisms.

Antagonistic muscles, examples of this muscle, working mechanism, coordination of muscles – mechanism of flexion and extension of the elbow joint etc are also explained in the chapter.

Key Features of Selina Solutions for class 9 Biology Chapter 12 – Skeleton – Movement and Locomotion

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• Use of diagrams to explain concepts
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