Harvard Human Anatomy - Vessels & Circulation

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22 Terms

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Circulatory system

Responsible for transporting gases, nutrients, and waste products of metabolism.

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Blood vascular system

Comprises blood (fluid), heart (muscular pump), and vessels for circulation.

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Lymph vascular system

Includes lymph (fluid) and network of capillaries vessels including nodes.

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Blood

Contains hematocytes and platelets in plasma.

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Hematocrit

Percentage of blood volume occupied by hematocytes.

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Erythrocytes

Red blood cells carrying gases. (45% of hematocrit)

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Buffy coat

Consists of leukocytes and platelets. (<1% hematocrit)

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Plasma

Fluid with water, proteins, and solutes.

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Plasmacrit

Percentage of plasma in a sample.

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Heart

Four-chambered pump propelling blood. Divided into right atrium, right ventricle, left atrium, left ventricle.

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Artery

Vessel carrying blood away from the heart toward tissues.

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Vein

Vessel carrying blood to the heart from capillaries.

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Pulmonary circulation

Heart pumps deoxygenated blood to the lungs.

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Systemic circulation

Heart pumps oxygenated blood to the body.

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Pulmonary arteries

Arteries that carry blood to lung capillary beds.

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Pulmonary veins

Transport oxygenated blood from lungs to heart.

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Aorta

Artery distributing blood to the body.

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Superior vena cava

Vein carrying deoxygenated blood from upper half of body to right atrium of heart.

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Inferior vena cava

Vein transporting deoxygenated blood from lower half of body to right atrium of heart.

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Portal vein

Carries nutrient-rich blood from GI tract to liver

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Mitral valve

Separates left atrium and ventricle.

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Tricuspid valve

Separates right atrium from ventricle.