Muscles and Their Functions

University:
University of South Alabama
Course:
BMD 114 | Anatomy and Physiology I
Academic year:

2021
Views:

301

Pages:

1
Author:

Pompanin8za

Muscles and Their Functions Muscle A band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body are known as muscles. Movement When one of them contracts, the bone is pulled in that direction. The other muscle of the pair relaxes. To move the bone in the opposite direction, the relaxed muscle contracts to pull the bone towards its original position, while the first relaxes. Thus, two muscles have to work together to move a bone. Movement of muscles Gait of Animals Movement in other animals Earthworm – The body is made of many rings and but do not posses bones. They have muscles which help in expansion and contraction of the body. Bristles are present that help in gripping the ground. Snail – It has outer skeleton called shell and lacks bones. Movement in snails is with the help of muscular foot. Cockroach – Its body is divided into three parts head, thorax and the abdomen. The breast muscles help in flying while the muscles of the leg help in walking. Birds – The forelimbs are modified into wings for flight and hind limb help in walking and perching. Bones are hollow and light and the flight muscles are attached to the breastbones. Fish – They have a streamlined body which allows easy movement in water. The muscles move making a curve. Fins and tail help in movement and maintaining balance. Snake – It has a long backbone and thin muscles. It slithers and moves by curving its body forming loops.