1. By: Ryan Hall & Alex Hernandez

2.  The heart, blood, and blood vessels (capillaries, veins, and arteries) make up the Circulatory System

3.  The heart is an organ that relaxes and contracts 70 to 80 times per minute to pump blood throughout the body.  The heart takes deoxygenated blood from the veins and, using the lungs, pumps oxygenated blood through many arteries.

5.  The blood travels through blood vessels.  Things like nutrients, water, O2, CO2, salts, and waste products are transported through the blood.  The blood also helps with bodily defenses.

7.  All arteries carry blood from the heart to all other organs.  Veins carry deoxygenated blood back to the heart.  The capillaries allow for gaseous exchange between the capillaries and tissue fluids

9.  Heart disease, aneurysms, high blood pressure, varicose veins, heart-attacks, heart burns, vascular disease, and heart bypasses are all things that can occur because of problems in the cardiovascular system.

10.  A brain aneurysm is when the artery that supplies blood to the brain has a weak wall.  If the aneurysm ruptures, it sends blood to the school and can case a stroke.

11.  Heart Bypasses occur when coronary arteries are blocked and those are treated by finding an alternative path to the heart.

13.  The digestive system provides the heart with nutrients so the heart can keep beating.  The circulatory system takes the nutrients throughout the body through blood.

14.  This system provides all the oxygen in the blood that is then transported throughout the body by the circulatory system.

15.  Cardiac muscle makes up the heart.  Smooth muscle makes up blood vessels.