Locomotion & Movement - Lecture 1 | Unacademy NEET | LIVE DAILY | NEET Biology | Dr. Sachin Kapur

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Movement is when the living organism moves a body part or parts to bring without a change in the position of the organisms. Locomotion is when the movement of a part of the body leads to a change in the position and location of the organism. Both of these are brought about by the joint efforts of the skeletal and muscular systems. Movement is seen in both vertebrates and invertebrates.

Types of Movements
When we talk about locomotion and movement, there are three types of movements:

1. Amoeboid movement: It is brought about by pseudopodia which are appendages that move with the movement of protoplasm within a cell.

2. Ciliary movement: It is brought about by appendages called cilia which hair-like extensions of the epithelium. Both these kinds of movements are seen with cells of the lymphatic system.

3. Muscular movement: It is a more complex movement that is brought about by the musculoskeletal system. This type of movement is seen in the higher vertebrates. To understand more about the movements brought about by the musculoskeletal system, we need to understand the types of muscles, and joints.

Types of Muscles:
Muscles found in higher vertebrates are of three types:

1. Striated or skeletal muscles
2. Unstriated or smooth muscles
3. Cardiac muscles

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