Cardiovascular System Flashcards Preview

Ace Ess: Anatomy > Cardiovascular System > Flashcards

Flashcards in Cardiovascular System Deck (26):
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Components of the cardiovascular system

Heart, blood vessels, and blood

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Cardiovascular systems functions

Delivery of oxygen and nutrients to the body's tissue while removing waste and aiding in temperature regulation and acid-base balance

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Blood

The fluid component of the cardiovascular system that links the internal environment of the body to the external environment by transporting material between, and to various cells and tissues

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Plasma

The liquid component of blood that carries hormones, plasma proteins, food materials, ions, and gases throughout the body

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Non-plasma portion of blood

Formed elements including red blood cells, various types of white blood cells, and platelets

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Categories of blood vessels

Arteries and arterioles, veins and venules, and capillaries

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Arteries and arterioles

Carry oxygen-rich blood away from the heart

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Veins and venules

Return oxygen-depleted blood to the heart

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Capillaries

Provide sites for gas, nutrient, and waste exchange between blood and tissues

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Arteriosclerosis

Hardening and narrowing of arteries due to plaque accumulation that increases blood pressure, most commonly seen in older adults

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Circuits of the heart

Pulmonary circuit (right side that receives oxygen depleted blood from the body) and systemic circuit (left side that pumps pumps oxygen rich blood to the body)

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Pulmonary circuit (right side of the heart)

Receives partially oxygen-depleted blood containing elevated levels of carbon dioxide from the body and pushes it into the lungs, where the blood releases carbon dioxide in exchange for oxygen

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Systemic circuit (left side of the heart)

Receives newly-oxygenated blood from the lungs and pumps it to various cells and tissues of the body

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Atria

Receiving chambers of the heart

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Ventricle

Propulsion chambers of the heart

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Atrioventricular valve

Heart valve that separates the atria from the ventricle

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Tricuspid valve

Right atrioventricular valve

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Mitral valve (bicuspid valve)

Left atrioventricular valve

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Venous blood

Blood returning to the heart through the veins

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Pulmonary arteries

Arteries that transport blood from the right ventricle to the lungs, only arteries that carry partially oxygen-depleted blood

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Pulmonary veins

Veins that transport freshly-oxygenated blood from the lungs to the left atrium, only veins that carry oxygen-rich blood

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Interventricular septum

Muscular wall preventing the mixture of blood between the right and left ventricles of the heart

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Cardiac cycle

The period from the beginning of one heartbeat to the beginning of the next

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Systole

Contraction phase of the cardiac cycle, during which blood leaves the ventricles

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Diastole

Relaxation phase of the cardiac cycle, during which blood fills the ventricles

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Valves of the heart

Tricuspid valve, pulmonary valve, mitral valve, aortic valve