| A | B |
|---|
| circulatory system | Sysem that circulates blood throughout the body. |
| arteris | Carry blood away from the heart |
| veins | carry blood toward the heart |
| arterioles | the smallest arteries |
| venules | the smallest veins |
| capillaries | Thin walled vessels attached to arterioles/venules allowing the diffusion of oxygen into body tissues and diffusion of wastes into the circulatory system |
| diffusion | Movement from an area of high concentration to an area of low concentration |
| leukocytes | Large, white, defender blood cells that seek out intruders of the blood |
| hormones | chemical messengers of the body that travel the blood system |
| plasma | the liquid portion of blood which makes up 55% of the blood |
| erythrocytes | Red blood cells which transports oxygen to body tissues |
| hemoglobin | the protein portion of an erythrocyte that holds/releases oxygen |
| phagocytes | special cells which consume worn out erythrocytes |
| platelets | cell fragments from the bond marrow which help blood to clot during bleeding. |
| blood transfusion | Transferring blood from healthy individuals to those who need the blood. |
| antigens | Special markers attached to the outer wall of the red blood cell. |
| universal donor blood | Blood which does not have any antigens and can therefore be given to anyone |
| universal recipient | Person who has every type of antigen on his red blood cell and will not have a reaction to receiving anytype of blood. |
| Rh factor | Another blood marker which if one has, they are Rh + or Rh- if they don't have it. |
