Question

Differentiate between voluntary and involuntary muscles. (2)points​

Answer 1

Answer:

Muscles that are under your conscious control are called voluntary muscles.

Muscles that are not under your conscious control are called involuntary muscles.

Answer 2

Voluntary Muscles

Voluntary muscles are long, multinucleated cells, containing sarcomeres arranged into bundles. These muscles are composed of cylindrical fibers and are usually attached to bones and the skin. They play an important role in allowing the body to move by contracting and relaxing and their actions are mainly under the control of the somatosensory nervous system. These voluntary muscles include skeletal muscles.

• Skeletal muscles

It is one of the major types of muscle which is under the voluntary control of the somatic nervous system. It mainly refers to multiple bundles of cells and muscle fibers. These muscles are involved in the muscle contraction, signaling pathways, etc.

Involuntary Muscles

Involuntary muscles are striated and branched in the case of cardiac muscle. The actions of involuntary muscles are mainly controlled by the autonomic nervous system in the body. These involuntary muscles include smooth muscles and cardiac muscles.

• Smooth muscles

These muscles are found in the internal walls of the intestines, stomach, uterus, and blood vessels. These muscles help in pushing food molecules along the length of the alimentary canal, controlling the internal diameter of the blood vessels, and contracting the uterus during labour and childbirth.

• Cardiac muscles

These muscles are unique and are found only in the heart. These muscles help in maintaining the proper blood circulation throughout the body by maintaining the heartbeat.

$\huge\mathbb{\pink{ジャクソンとハン }}$