1. Circulatory System

2. Circulatory System Notes
Function
Carries products from the digestive and respiratory systems throughout the body by way of the blood
Carries wastes to excretory system for removal

3. Circulatory System Notes
Works with Digestive System
Works with Respiratory System
Carries nutrients from food to cells of body to provide them with energy
Carries oxygen from lungs to cells for cellular respiration
Carries carbon dioxide from cells to lungs for removal

4. Circulatory System Notes
Heart
Muscle that pumps blood to body
Atrium = chamber of heart that collects blood
Ventricle = chamber of heart that pumps blood
Septum = wall inside heart separating left and right

5. Circulatory System Notes
Blood Vessels
Tubes that carry blood, vary in size and direction
Artery = vessel that carries blood AWAY from heart; blood has A LOT of oxygen and nutrients
Vein = vessel that carries blood TO heart; blood is LOW in oxygen and nutrients
Capillary = small vessel where gases and nutrients move into cells of body, connect arteries to veins

6. Circulatory System Notes
Blood Pressure
Blood pressure simulation
Measures how much force blood is putting on walls of blood vessels
A ‘vital sign’ that shows heart health
Measures high pressure (systolic) and low pressure (diastolic)
Normal for teens is around 110/70

7. Circulatory System Notes
Blood
Liquid organ that transports gases and nutrients around body
Comes in four types A, B, AB, and O
Mostly liquid with solids and gases
Made of plasma, red blood cells, white blood cells, and platelets
Plasma is water, glucose, nutrients, and gases
RBC carry oxygen throughout body
WBC fight infection
Platelets help blood clot

8. Circulatory System Notes
Problems
Angina = chest pain
Heart attack = flow of blood to the heart is blocked, causing pain, irregular heartbeat, and damage to heart, can be fatal
Aneurysm = bulge or swelling in a blood vessel, causing possible rupture or blockage
Stroke = blood flow in the brain is interrupted, can paralyze or even be fatal