My Topics to Research are:
1) 5 main functions of muscles
2) How muscles join to bones
- tendons
- ligaments

3) Muscular Diseases
4) Sprains & strains

Muscular System

The muscular system is composed of over 650 muscles. Differences between each muscle are found by location, function, structure, and the way each muscle contracts.

The 5 Main Functions of Muscles:

#1 They Give Our body shape

- muscles attach to the skeletal structure and add density to our figures

- between 40%-45% of our body is made up of muscles

#2 The Help Us Move

- when muscles contract they cause us to move

#3 Give Posture When Standing/Sitting

#4 They Produce Majority of Our Body Heat

#5 They Protect Us From Shock

How Muscles Join to Bones:

Tendons

- strong cords connecting muscle to bone

- when the muscles contract, they pull on the tendons, which pull on the muscles, and that causes movement

- important job = protect from strain during movement

Ligaments

- connect bone to bone

- they connect at the ends of muscles and keep them from slipping and sliding, and force them to bend

- stabilize joints (allow joints to move in specific direction, need more than one group of ligaments to keep joints aligned)

Muscular Diseases:

Fibromyalgia

- a chronic pain syndrome, or chronic musculoskeletal disorder (as referred to by doctors and scientists)

- a condition where pain occurs in muscles and surrounding structures without any obvious tissue damage

- it can be treated with aerobic fitness training

Tendonitis

- an inflammation of a tendon

- it is a type of overuse injury that is more common in younger people who play sports often

- can be treated with deep transverse friction tissue massages along with rest, restricted activity, pain medication prescribed by your doctor

Chronic Fatigue Syndrome (CFS)

- a condition which can affect people of all ages

- an illness which causes long-lasting physical and mental fatigue

- exercise therapy is a promising treatment for chronic fatigue syndrome

Sprains and Strains:

Strains

- muscle contracts, shortens, and pulls on the tendon

- are muscles that has been stretched too far

- it's common for people to strain muscles in their back, neck, or legs

- a strain is a pain inside the muscle

Sprains

- ligament is stretched/torn causing sprain

- sprains will probably start to hurt right away