| A | B |
|---|
| ABO system | blood antigen (protein) system that is responsible for four major blood groups |
| anemia | a conditions where red blood cells do not carry enough oxygen |
| arteries | vessels that carry blood away from the heart |
| capillaries | vessles that allow the exchange of molecules between the blood and cells |
| lymphatic system | collects and recycles fluids that leak from capillaries; also involved in fighting infections |
| plasma | the liquid component of the blood |
| platelets | small cell fragments that carry clotting factors |
| red blood cells | blood cells that carry oxygen |
| Rh factor | 85% of the population is positive for this blood type |
| valves | prevents the backflow of blood in a vein |
| veins | vessels which carry blood back to the heart |
| white blood cells | blood cells responsible for defense against disease |
| atrium | chamber that receives blood returning to the heart |
| ventricle | chamber that pumps blood away from the heart |
| vena cava | largest vein, returns blood to the right atrium |
| aorta | largest artery in the body |
| coronary arteries | vessels which take oxygenated blood and nutrients to the heart muscle |
| sinoatrial node | the pacemaker of the heart; initiates heart contractions |
| blood pressure | force exerted by blood as it moves though the arteries |
| pulse | pressure waves in an artery |
| heart attack | when an area of the heart dies due to lack of oxygen |
| stroke | when an area of the brain does not receive enough oxygen |
| ECG or EKG | measures the electical activity of the heart |
| hypertension | high blood pressure |
| systolic | the blood pressure of an artery when the heart is contracting |
| diastolic | the blood pressure of an artery when the heart is relaxing |
| pharynx | upper region of the throat ; shared by the digestive and respiratory system for food and air passage |
| larynx | voice box |
| bronchus - bronchi | set of tubes that split from the trachea leading to the lungs |
| alveolus - alveoli | clusters of air sac responsible or oxygen and carbon dioxide exhange in the lungs |
| diaphragm | primary muscle used for breathing; separates the thoracic cavity from the abdominal cavity |
