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Components of Blood
Plasma- Liquid component of blood
Red Blood Cells- Carry Oxygen and
Carbon Dioxide Throughout the
body. Contain a molecule called
hemoglobin which binds to oxygen.
White Blood Cells- Fight Disease
Platelets- Fragments that help to
form clots
Lymphatic System
Network of vein like vessels that return fluid
to the blood stream. This fluid is called
lymph.
Lymph Nodes are small knobs of tissue that
filter the lymph that passes through.
Cardiovascular System
• Carries needed substances to cells and
removes waste products.
• Consists of the Heart, blood vessels and
blood.
Vocabulary
• Arteries- Carry blood away from the heart.
• Veins- Carry blood to the heart.
• Capillaries- Tiny Vessels where substances are
exchanged.
Blood Flow- Two Loops
1. Right- Heart to
lungs back to
the heart.
2. Left-Heart to
body back to
the heart.
The Respiratory System
• Takes in Oxygen
• Removes Carbon Dioxide and water
Path of air
Nose  Pharynx  Trachea  Bronchus 
Lungs
Cellular Respiration
The cell takes in oxygen and glucose and
makes ATP (energy) and carbon dioxide.
It takes place in the mitochondria.
Lungs
• After the air reaches the lungs, it moves it
to the alveoli which are small air sacks
where gas exchange happens.
• Carbon Dioxide moves out of the blood
stream and Oxygen moves in.
• When you breathe the ribs and the
diaphragm expand and contract your
chest. As a result air flows in or out.
Excretory System
• Collects and removes liquid waste from
the body.
• Maintains homeostasis.
• Includes- Kidneys, bladder, urethra,
ureters, lungs, Liver and Skin
• Kidneys- Filter blood and regulate the
amount of water.
• Lungs- Remove Carbon Dioxide.
• Skin- Remove Urea and water through
perspiration.
• Liver- Urea and bile are produced.