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Http://medical anatomy.net/human-muscular-system-diagram-labeled/

Http://medical anatomy.net/human-muscular-system-diagram/

7th grade science book

degreed.com

livescience.com

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any device that makes work easier.

Muscles work together like a giant machine

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Thin bands of tissue attached to bones

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muscles that appear striped under the microscope.

Non Striated muscles:

muscles that do not appear striped under the microscope.

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an organ that can relax, contract, and provide the force to move bones and body parts.

Skeletal muscles:

muscles that move bones and are attached to them.

Cardiac muscles:

muscles found in the heart that help support it.

Smooth muscles:

muscles found in internal organs that you cannot control.

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It only takes half as long to gain muscle than it does to lose it.

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Muscles make up 40% of your total body weight.

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Muscles that you cannot choose to move no matter what.

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Muscles that you can move whenever you want.

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1. Inflammatory Myopathies- a disease that includes

muscle inflammation and muscle weakness

2. Polymyositis- a type of chronic
inflammation in the muscles.
3. Dermatomyositis- inflammation of the skin and the underlying muscle tissue.

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Parts of the Muscular System and their functions

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Parts of the Muscular System and their functions

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Frontalis: serves for facial expressions

Trapezius: moves the scapulae and supports the arm

Deltoid: it is the prime mover of the arm abduction along the frontal plane

Rectus Abdominus: flexes the lumbar spine, assists with breathing and is important in respiration

External Oblique: pulls the chest downwards to compress the abdominal cavity

Sartorius: helps flex,adduct and rotate the hip

Zygomaticus: controls facial expression

Sternocleidomastoid: flexes the neck and helps with the oblique rotation of the head

Pectoralis Major: helps with the movement of the shoulder joint

Biceps Brachii: helps control the motion of the shoulder and elbow

Gracilis: responsible for hip abduction and also assists knee flexion

Adductor Longus: Controls the thigh bones ability to move inward and sideways

Rectus Femoralis: helps extend and raise the knee

Vastus Lateralis: Extends the lower leg and allows the body to rise from a squatting position

Soleus: plantar flexor of the ankle

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Pairs of skeletal muscles work together to help you move. The muscles contract and relax when your muscles go in different positions.

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1. There are more than 600 muscles in the human body.