BLOOD AND THE LYMPHATIC AND IMMUNE SYSTEM CHAPTER 6

BLOOD AT A GLANCE

FUNCTION

Blood transport gases, nutrients and waste all areas of the body either attached to red blood cells or dissolved in plasma. White blood cells fight infection and disease, and platelets initiate the blood clotting.

ORGANS

Formed Elements : Erythrocytes a red blood cell that (in humans) is typically a biconcave disc without a nucleus.

Erythrocytes contain the pigment hemoglobin, which imparts the red color to blood, and transport oxygen and carbon dioxide to and from the tissues.

Leukocytes a colorless cell that circulates in the blood and body fluids and is involved in counteracting foreign substances and disease; a white (blood) cell. There are several types, all amoeboid cells with a nucleus, including lymphocytes, granulocytes, monocytes, and macrophages.

Platelets , also called thrombocytes (thromb- + -cyte, "blood clot cell"), are a component of blood whose function (along with the coagulation factors) is to stop bleeding by clumping and clotting blood vessel injuries. Platelets have no cell nucleus: they are fragments of cytoplasm that are derived from the megakaryocytes of the bone marrow, and then enter the circulation.

Plasma the colorless fluid part of blood, lymph, or milk, in which corpuscles or fat globules are suspended.

WORD PARTS

Agglutin/o Clumping Base/o Base Chrom/o Color Cyt/o Clotting Eosin/o Cell Erythr/o Rosy Red Fibrin/o Red Fus/o Fibers, Fibrous Granul/o Granules

Hem/o Blood Hemat/o Blood Leuk/o White Lymph/o Lymph Morph/o Shape Neutr/o Neutral Phag/o Eat,Swallow Sanguin/o Blood Septic/o Infection Thromb/o Clot

SUFFIX

-apheresis removal, carry away -crit separation of -cytosis more than normal -emia blood condition -globin protein -Penia abnormal decrease, too few -Phil attracted to -poiesis formation -siasis standing still

THE LYMPHATIC AND IMMUNE SYSTEM AT A GLANCE

FUNCTION

The lymphatic consist of a network of lymph vessels that pick up excess tissue fluid, cleanse it, and return it to the circulatory system. It also picks up fat that have been absorbed by the digestive system. The immune system fights disease and infection‘s .

ORGANS

Lymph Nodes each of a number of small swellings in the lymphatic system where lymph is filtered and lymphocytes are formed.

Lymphatic Vessels are thin walled, valved structures that carry lymph. As part of the lymphatic system, lymph vessels are complementary to the cardiovascular system. Lymph vessels are lined by endothelial cells, and have a thin layer of smooth muscles, and adventitia that bind the lymph vessels to the surrounding tissue.

Spleen an abdominal organ involved in the production and removal of blood cells in most vertebrates and forming part of the immune system.

Thymus Glands a lymphoid organ situated in the neck of vertebrates that produces T cells for the immune system. The human thymus becomes much smaller at the approach of puberty.

Tonsils either of two small masses of lymphoid tissue in the throat, one on each side of the root of the tongue.

WORD PARTS

Adenoid/o Adenoids Axill/o Axilla, Underarm Immun/o Perfection Inguin/o Groin Area Lymph/o Lymph Lymphaden/o Lymph Nodes Lymphangi/o Lymph Vessels

Nucle/o Nucles Path/o Disease Splen/o spleen Thym/o thymus gland Tonsill/o tonsils Tox/o poison

SUFFIX

-edema swelling -globulin protein