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Tour of the Human Body Systems

The Tour Starts Here!

The Immune System
The Nervous System
The Excretory System
The Respiratory System
The Circulatory Syatem
The Digestive System
The Skeletal System
The Muscular System
Glossary of Terms
The Circulatory System Vocabulary

Aorta: Large elastic artery that carries blood away from the left ventricle and into the systemic circuit.

Arteriole: Small arterial branch that delivers blood to a capillary network

Artery: Blood vessels that carry blood away from the heart.

Atrium: Chamber of the heart.

Blood Transfusion: Transfer of blood or blood components into a persons bloodstream.

Capillary: Small blood vessels.

Circulatory System: System of blood, blood vessels, lympatics, and the heart. It is the circulation of blood and lymph.

Coronary Circulation: supplies blood to the muscles of the heart.

Deoxygenated Blood: Blood without oxygen.

Diastole: When the chamber fills with blood and prepares for the start of the next cardiac cycle.

Hemoglobin: Protein composed of four globular subunits.

Lymph: Fluid contents of lymphatic vessels, similar in composition to intestinal fluid.

Pacemaker: Sets the cardiac contraction.

Plasma: The fluid ground substance of whole blood.

Platelets: Clot blood.

Pulmonary Circulation: The passage of blood from the right side of the heart through arteries to the lungs, where it picks up oxygen and is returned to the left side of the heart by veins.

Red Blood Cells: Many in human body, and they carry oxygen.

Rh Factor: Surface antigen that may be present or absent from the surfaces of red blood cells.

Sphygmomanometer: Device used for measuring blood pressure.

Systemic Circulation: Vessels between the aortic semilunar valve and the entrance to the right atrium, the circulatory system other than vessels of the pulmonary circuit.

Systole: When the chamber pushes blood into an adjacent chamber or into an arterial trunk.

Valve: Forces the blood in one direction and doesnt allow it back through.

Vein: Carries blood from capillary bed to the heart.

Vena Cava: Largest artery of the body.

Ventricle: One of the large, muscular pumping chambers of the heart that discharge blood into the pulmonary or systemic circuit.

Venule: Thin walled veins that receive blood from capillaries.

White Blood Cells: Fight off germs.