The Muscular System

By Maya Myers

What is the muscular system?

The muscular system is an organ system consisting of skeletal, smooth and cardiac muscles. It permits movement of the body, maintains posture, and circulates blood throughout the body. Muscle is located all over the body.

Some organs and functions in the Muscular System

Involuntary- Smooth muscles that cannot be controlled by will.

Voluntary- muscles whose actions can be controlled voluntarily.

Some functions of the muscular system are skeletal movement, blood pumping, and heart beating.

Some tissues in the muscular system are:

Skeletal Muscle Tissue-movement of tissue of a facial expression under conscious control.

Cardiac Muscle Tissue-pumping of blood through the heart; Alternate contraction and relaxation.

Smooth Muscle Tissue-controls slow, involuntary movements such as the contraction of the smooth muscle tissue in the walls of the stomach and intestines.

What are some diseases in the muscular system?

Dermatomyositis- autoimmune disease causing skin rash and muscle weakness.

Muscular Dystrophy- genetic disease that renders muscle fibresmore vulnerable to damage than normal.

Compartment syndrome- the result of too much pressure building up around the muscles causing severe pain and sometimes cellular death.

Rhabdomyolysis- causes muscle fibbers to break down to get absorbed into the bloodstream. Alcoholism, drug abuse, and heatstroke are several known causes.

Muscular dystrophy:

treatments: there is no known cure for it.

Symptoms: frequent falls, walking on the toes, and muscle pains.

causes: genetic mutations particular to that type of the disease.

Can a person live without the Muscular System?

Someone can not live without the muscular system because it helps your balance and posture, absorbing shock and heat, breathing, and digesting food. If our bodies did not have muscles we couldn't be able to breath and our hearts wouldn't be able to pump blood throughout our bodies.

Other organ systems that interacts with the mucular system

The Digestive System interacts with the Muscular System, because the brain controls muscles for eating and elimination. Another organ system that interacts is the Skeletal System, because when you move around your bones move with you and gives the muscles some sort of protection. The Nervous System interacts also because the receptors in muscle provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. The nervous system regulates the speed at which food moves through the digestive tract.