Muscular System

By: Steph, Natalie, Maddie

Functions of the System

• Muscles allow movement.

• Muscles give us our body form and shape.

• Enables facial expressions used to communication

Functions of Parts

• Abdominal: sitting up, postural alignment

• Biceps: lifting pulling• Deltoids: overhead lifting• Trapezius: moves head

sideways• Oblique: rotation and side

extension of body• Latissimus dorsi and

rhomboids: postural alignment, open doors

Functions cont

• Triceps: pushing

• Pectorals: pushing from lying down position

• Calves: standing on tiptoes

• Gluteus and hamstrings: climbing stairs, walking, standing up

How is it connected to other systems?

• Respiratory- as you breathe in the muscles relax, and the lungs expand.

• Digestive- When you swallow, the esophagus muscles interact with the digestive system.

• Nervous- sends signals to move.

NO

Common Illnesses

• Muscular dystrophy causes the muscles in the body to become weak. The muscles break down and are replaced with fatty deposits over time.

Common Illnesses

• Chronic Fatigue Syndrome

• Difficulties with memory and concentration

• Sleeping problems• Muscle pains• Tender lymph nodes

and sore throat

Common Illnesses

• Rhabdomyolysis is the breakdown of muscle fibers.

• Some of these are toxic to the kidney and frequently result in kidney damage.

Interesting facts

• About 630 total.• The gluteus maximus

is the largest.• 72 to speak.• The hardest working

muscles are in the eye. • 17 to smile. 43 to

frown

Interesting Facts (cont.)

• Resting muscles receive about 30% of blood flow.

• Muscles use stored ATP in about two seconds.

• The circular muscle controls lip movement.