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Muscles
 
Humans have three different types of muscle:
 

Skeletal Muscle - This type of muscle is attached to bone, mostly in the legs, arms, abdomen, chest, neck, and face. These muscles hold the skeleton together, give the body shape, and help it with everyday movements. (They are also known as voluntary muscles because you can control their movement).

 

Smooth Muscle - Generally, we can't consciously control our smooth muscles; rather, they're controlled by the nervous system automatically. Examples of smooth muscles are the walls of the stomach and intestines, which help break up food and move it through the digestive system.

 

Cardiac Muscle - This type of muscle is found in the heart. The walls of the heart's chambers are composed almost entirely of muscle fibres. Cardiac muscle is also an involuntary type of muscle. It's rhythmic, powerful contractions force blood out of the heart as it beats.

 

Skeletal Muscles are the muscles that we commonly talk about. Here are some of the main muscles in the body.

 

 

  Muscle

Location 

Abdominals

Front torso  

Obliques

Side torso

Pectoralis

Chest

Latissimus Dorsi

Back

Deltoid

Shoulder

Biceps

Upper front arm

Triceps

Upper back arm

Gluteus

Bottom

Quadriceps

Upper front leg

Hamstrings

Upper back leg

Adductor

Inner thigh

Abductor

Outer thigh

Calf

Lower back leg