Lymphatic and Immune.

A body fluid that moves through lymphatic vessels and empties into large veins.

Red blood cell. Erythr- = red, -cyte = cell.

White blood cell. Leuko- = white, -cyte = cell.

Platelet. Thrombo- = clot, -cyte = cell.

The fluid portion of blood containing proteins, hormones, nutrients, and waste.

A substance on the surface of red blood cells that determines blood group.

A protein in plasma that reacts against foreign antigens.

Antigens on the surface of some individuals' red blood cells. Rh-positive means the factor is present; Rh-negative means it is absent.

Bone marrow and thymus. Where lymphocytes mature.

Lymph nodes, spleen, tonsils, and lymphoid tissues in mucous membranes.

A type of lymphocyte produced in the bone marrow that matures in the thymus.

A type of lymphocyte produced in and maturing primarily in the bone marrow.

Physical barriers (skin, mucous membranes) that prevent pathogens from entering body tissues.

Immune cells that engulf pathogens. Includes dendritic cells, neutrophils, eosinophils, macrophages, and monocytes.

Immune cells that look like lymphocytes. Their granules contain chemicals that destroy virally infected cells.

Immune cells formed from B lymphocytes that secrete antibodies.

Chemical messengers released by T lymphocytes to coordinate immune responses.