Locomotion And Movement Class 11 - Boards Zoology

## Locomotion and Movement Locomotion and movement involve the ability of organisms to move their body or body parts. Movement refers to any change in the position of a body part, while locomotion is a type of movement that results in a change of position of the organism as a...

Which of the following is the correct number of bones in the axial skeleton of humans?

80

Which band in a sarcomere remains unchanged during muscle contraction?

A band

Which of the following is the correct number of bones in the axial skeleton of humans?

80

Which band in a sarcomere remains unchanged during muscle contraction?

A band

What is the difference between movement and locomotion, and how are they related?

Movement is any change in posture or position of a body part. Locomotion is a type of movement that results in a change in the organism's location or position. All locomotion are movements, but not all movements are locomotion (e.g., blinking is movement, not locomotion).

Define a sarcomere and its significance in muscle contraction.

A sarcomere is the functional unit of muscle contraction, defined as the distance between two successive Z-lines. It is the basic contractile unit within a muscle fiber where the sliding of actin and myosin filaments occurs, leading to muscle shortening.