| A | B |
|---|
| Heart | muscular pump that moves blood around the body |
| chambers of the heart | R & L atria and R & L Ventricles |
| septum | solid sructure that divides an area in to two halves |
| tricuspid valve | R atrioventricular valve |
| bicuspid valve | L atrioventricular valve |
| semilunar valves | valves between ventricles and great vessels |
| pericardium | sac that covers heart |
| visceral pericardium | pericardium next to heart |
| epicardium | parietal pericardium - outer layer |
| myocardium | heart muscle |
| endocardium | lining of heart |
| plasma | liquid portion of blood |
| formed elements of blood | RBC's, WBC's, platelets |
| erythrocytes | RBCs |
| leukocytes | WBCs |
| thrombocytes | platelets |
| lymph | cellular field |
| lymph nodes | small bodies of lymphoid tissue that act as filters |
| spleen | largest lymph organ - recycles RBC's and stores a some blood |
| thymus gland | in thorax - role in development of immune system in children |
