Your Guts

What do they do?

The Skeletal System

Provides a frame to support and protect body parts

Protects organs like your brain

Marrow in your bones makes blood cells

Without bones, you couldn’t move!

The Muscular System

Works with your skeletal system to help you move

Often work in pairs Bend = flexor Straighten = extensor

Resistance exercise means more strength

Aerobic exercise means heart strength and muscle endurance

The Integumentary System

Skin, hair, and nails protect other tissues

Keeps water in, foreign particles out (think band-aids)

Helps with sense of touch

Regulates temperature

The Cardiovascular System

Distributes blood to other organs

Made of the heart, blood vessels, and blood

Blood carries oxygen Oxygen poorlungs Oxygen rich from

hearteverywhere else

The Lymphatic System

Returns fluids to blood vessels and helps get rid of bacteria and viruses

Takes fluid from between cellsblood

The spleen and tonsils are parts of the lymphatic system

The Respiratory System

Brings in oxygen and releases carbon dioxide

Breathing involves your lungs, muscles in the rib cage, and your diaphragm

Puts oxygen into your blood; takes out carbon dioxide from blood and exhales it

The Digestive System

Breaks food down into nutrients your body can use

Breaking and mashing food is mechanical

Breaking large food molecules into simpler, useable ones is chemical

The Urinary System

Removes waste from your blood and regulates body fluids

We need to get rid of all the water we take in

Kidneys filter our blood

The Nervous System

Receives and sends electrical signals throughout the body Central: brain and

spinal cord Peripheral: everything

else (nerves) Regulates thinking, sensing,

feeling, movement, heart rate, blood pressure, body temperature, breathing, balance, etc.

The Endocrine System

Sends out chemical messages that control other systems Chemical messages are

called hormones Hormones tell cells and

tissue what to do Pancreas regulates blood

sugar Includes adrenal and

thyroid glands

The Reproductive System

Female: produces eggs, nourishes/protects fetus

Male: provides the sperm for fertilizing the egg