Locomotion and Movements Class 11 Notes

 · Locomotion and Movements Class 11 Handwritten Notes FOR NEET & CBSE

 · Locomotion and Movements Class 11 Notes Biology

 · Class 11 Biology Revision Notes Chapter 20

 · Locomotion and Movements Class 11 Notes Biology Chapter 20

 · CBSE Locomotion and Movements Class 11 Notes Biology

 · NEET Locomotion and Movements Class 11 Notes Biology

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Locomotion and Movements Class 11 Notes Biology Chapter 20 - PDF DOWNLOAD

Locomotion and Movement Class 11 Notes are cumulated by our panel of highly experienced teachers to provide the students with effective exam preparation. The pdf includes the summary of the chapter, important points to remember and detailed explanation of important concepts and derivations for better understanding and retaining of the chapter. Going through these Locomotion and Movement Class 11 Notes would easily help students to grasp challenging concepts which would ultimately lead them to score maximum marks in their exams.

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TOPIC 01 : Structure and Functions

MOVEMENTS

Movement is defined as any visible change of position, exhibited either by the whole organism or any part of the body. It is one of the important characteristics of living organisms.

TYPES OF MOVEMENTS

Three main types of movement are exhibited by the cells of the human body. These are as follows

1. Amoeboid (Pseudopodial) Movement

Movement with the help of finger-shaped protoplasmic extensions (i.e., pseudopodia or false feet) (as seen in Amoeba) is called amoeboid movement, e.g., Movement of leucocytes and macrophages in blood. Cytoskeletal elements, like microfilaments are also involved in this type of movement.

2. Ciliary Movements

Movement with the help of cilia is called ciliary movement. Cilia are short, fine, hair-like structures present all over the body surface in large numbers, which beat in succession in coordinated manner to help in locomotion, e.g., Removal of dust particles and foreign substances through the trachea, passage of ova through female reproductive tract.

This type of movement occurs in most of our internal tubular organs that are lined by ciliated epithelium. The above two movements are called non-muscular movements.

3. Muscular Movements

Movement with the help of muscles is called muscular movement. These are brought about by the movement of myofilaments packed within the muscle fibres. The contractile property of muscles is used effectively to bring about a movement. This type of movement is found in majority of multicellular animals including humans. 

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