Explain the functioning of muscles for causing movement at a joint.
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Answer:
Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint
Muscles pull on the joints, allowing us to move. They also help the body do such things as chewing food and then moving it through the digestive system
Skeletal muscle
Skeletal muscles are the only muscles that can be consciously controlled. They are attached to bones, and contracting the muscles causes movement of those bones.
Skeletal muscles are the only muscles that can be consciously controlled. They are attached to bones, and contracting the muscles causes movement of those bones.Any action that a person consciously undertakes involves the use of skeletal muscles. Examples of such activities include running, chewing, and writing.
Smooth muscle
Smooth muscle lines the inside of blood vessels and organs, such as the stomach, and is also known as visceral muscle.
Smooth muscle lines the inside of blood vessels and organs, such as the stomach, and is also known as visceral muscle.It is the weakest type of muscle but has an essential role in moving food along the digestive tract and maintaining blood circulation through the blood vessels.
Smooth muscle lines the inside of blood vessels and organs, such as the stomach, and is also known as visceral muscle.It is the weakest type of muscle but has an essential role in moving food along the digestive tract and maintaining blood circulation through the blood vessels.Smooth muscle acts involuntarily and cannot be consciously controlled.
Cardiac muscle
Located only in the heart, cardiac muscle pumps blood around the body. Cardiac muscle stimulates its own contractions that form our heartbeat. Signals from the nervous system control the rate of contraction. This type of muscle is strong and acts involuntarily.
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