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Muscular System

Made up of the muscles that let you move.

Smooth muscle

This moves food through the digestive system. It is found in the digestive tract.

Cardiac muscle

This is found only in your heart.

Skeletal muscle

This is attached to your bones for movement. They often work in pairs.

biceps and triceps muscle

These are located in the arm.

These can make hundred of movements

Skeletal muscle


tissue that connects muscle to bone


Muscle that bends part of your body.


Muscle that straigtens part of your body.

exercised muscles

These are stronger and larger.

unexercised muscles

These weaken.

Resistance exercise

This is when people work against the resistance or weight of an object.

Aerobic exercise

This is steady, moderately intense activity which helps to strengthen your heart.


This is an injury in which a muscle or tendon is overstretched or torn.


This is when people exercise too much and a tendon becomes inflamed.

anabolic steroids

drugs which strengthen muscles but are bad for your health.

exercise program

this should be started slowly to avoid injury.

integumentary system

This is made up of your skin, hair and nails.

functions of skin

Protection, to keep water in the body, to feel via nerve endings, regulation of body's temperature, remove waste.

Sweat glands

This makes a salty substance called sweat to help cool your body.

parts of skin

blood vessels, nerve fibers, hair follicles, oil glands, sweat glands

blood vessels

transport substances and help regulate body temperature.

nerve fibers

carry messages to and from the brain.

hair follicles

These make hair. The only living cells of hair in in this place.

oil glands

Release oil that keeps hair flexible and waterproofs the epidermis.


The outer layer of the skin


Middle and thickest layer of skin


protein substance found in skin and connective tissue

nail root

Part of nail embedded in the skin

skin cancer

caused by damage to the genetic material in skin cells.


This causes pimples and is caused when skin has too much oil and dead skin cells which clogs hair follicles.

How skin heals

A blood clot forms to stop the bleeding, a scab is formed, bacteria fighting cells work to combat disease.

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