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32 terms

7th Grade, Science, Muscular and Integumentary System

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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
Tendons
tissue that connects muscle to bone
flexor
Muscle that bends part of your body.
extensor
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.
strain
This is an injury in which a muscle or tendon is overstretched or torn.
tendinitis
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.
epidermis
The outer layer of the skin
dermis
Middle and thickest layer of skin
collagen
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.
acne
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.