The Muscular System

Skeletal muscle

a muscle that works with the skeletal system that moves the limbs and other parts of the body. These muscles help hold the skeleton together, give the body shape, and help it with everyday movements (known as voluntary muscles because you can control their movement). They can contract (shorten or tighten) quickly and powerfully, but they tire easily.

Cardiac Muscle

The muscular tissue of the heart. The cardiac muscle is controlled involuntarily. While hormones and signals from the brain adjust the rate

Cardiac

Smooth muscle

Smooth

Muscle tissue occurring in internal organs and not under voluntary control and are controlled by the nervous system automatically. Smooth muscles are the walls of the stomach and intestines, which help break up food and move it through the digestive system. Smooth muscles take longer to contract than skeletal muscles do, but they can stay contracted for a long time because they don't tire easily.

Nervous System

Receptors in the muscles send signals that provide the brain with information such as pain. Also, the nervous system controls the contractions and movements muscles.

Skeletal System

The skeletal muscles protect the bones and allow them to move. The muscle's tendons attach one bone to another, which allows for the ability to walk and is the reason for flexibility.

Circulatory System

The circulatory system works with the muscular system to keep blood pumping around the body. The heart is a muscle which is a main part of the circulatory system

Digestive System

Smooth Muscles line your digestive system and help to move food through your intestines. The smooth muscle in the walls of the digestive organs rhythmically and efficiently moves the food through the system.

Allow for Movement

Movement

When muscles pull on the joints that is what allows for us to move. The movements your muscles make are controlled by the brain and nervous system. The involuntary muscles are controlled by the brain stem, the upper part of the spinal cord. The voluntary muscles are regulated by the cerebral motor cortex and the cerebellum

Stabilize Joints

Stabilize

The tendons of many muscles extend over joints and contribute to joint stability. This is most often seen in the knee and shoulder joints, where muscle tendons are a major factor in stabilizing the joint.

Maintain Posture

Maintain

Posture, such as sitting and standing, is maintained as a result of muscle contraction. The skeletal muscles are continually making fine adjustments that hold the body in stationary positions.

Generate Heat

Generate

Heat production or to maintain body temperature, it is an important by-product of muscle metabolism. Nearly 85% of the heat produced in the body is the result of muscle contraction. An example of this is shivering. It is a reflex triggered to maintain homeostasis.

More Facts

Most of the heat produced in your body comes from muscle contraction.

Muscle movement counts for almost 85 percent of the total heat produced inside the body.

When you’re cold, your muscles contract involuntarily. When you shiver, those are muscles trying to warm your body.

The body had over 600 individual muscles

Muscular Dystrophy

a hereditary condition marked by progressive weakening and wasting of the muscles.

Muscular Dystrophy

Muscular dystrophy is caused by genetic mutations that stop with the production of muscle proteins that are needed to build and maintain healthy muscles.

Carpal Tunnel

Carpal tunnel syndrome is a common condition that causes pain, numbness, and tingling in the hand and arm. The condition occurs when one of the major nerves to the hand is squeezed or compressed as it travels through the wrist.

Carpal Tunnel Syndrome

Muscle Sprain

A sprain is a stretching or tearing of ligaments which are the tough bands of fibrous tissue that connect two bones together in your joints. The most common location for a sprain is your ankle. Muscle Sprains are most common in athletes or people that work out often.

Muscle Sprain

Muscle Strain

A muscle strain, or pulled muscle, occurs when your muscle is overstretched or torn. Strains can happen in any muscle, but they’re most common in your lower back, neck, shoulder, and hamstring.

Causes

-Injury or overuse, such as sprains or strains, cramps or tendinitis

-A genetic disorder, such as muscular dystrophy

-Some cancers

-Inflammation, such as myositis

-Diseases of nerves that affect muscles

-Infections

-Certain medicines