| A | B |
| circulatory systems | blood carries materials to/from cells |
| blood | connective tissue |
| plasma | mixture of water, minerals, nutrients, sugars, proteins, and other substances |
| hemoglobin | a protein that contains an RBC |
| red blood cells | take oxygen to your cells |
| white blood cells | destroy pathogens and help clean wounds |
| platelets | tiny particles that drift through the blood |
| heart | has 4 chambers that pumps blood through the vessels |
| blood vessels | hollow tube that carries blood |
| 3 types of blood vessels | arteries, capillaries, & veins |
| arteries | vessels that carries to the heart |
| capillaries | smallest blood vessel |
| veins | that directs the blood back to the heart |
| pulminary circulation | when it circulates between the heart and the lungs |
| systematic circulation | circulation between the heart and rest of the body |
| lymphatic system | collection of organs and vessels that return extra fluid to the bloodstream |
| lymph | fluids and particles absord into capillaries |
| lymphatic organs | thymus, lymph nodes, spleen, tonsils |
| thymus | releases WBCs; then travel to other areas in the lymphs |
| lymph nodes | small, bean-shaped organs |