Systems Connections

Front

Heart Noun

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[hart]

Back

Heart

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A muscular organ, about the size of a fist, that pumps blood throughout the circulatory system every minute.

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Example: The image shows the heart's parts, like atria and ventricles, which help pump blood.

Front

Arteries Noun

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[ar-ter-ees]

Back

Arteries

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Blood vessels with thick, muscular walls that carry oxygen-rich blood away from the heart to the body's cells.

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Example: Arteries carry oxygen-rich blood away from the heart, shown by the red vessel labeled 'artery' with an arrow indicating flow direction.

Front

Veins Noun

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[vayns]

Back

Veins

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Blood vessels that carry waste-filled blood from the body's cells back toward the heart for re-oxygenation.

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Example: Veins carry blood from the arm back to the heart for re-oxygenation.

Front

Capillaries Noun

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[kap-i-lair-ees]

Back

Capillaries

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Extremely thin blood vessels, only one cell wide, where nutrients, gases, and waste products are exchanged with cells.

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Example: Capillaries in the alveolus allow oxygen and carbon dioxide to be exchanged between blood and air.

Front

Blood Noun

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[bluhd]

Back

Blood

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The fluid containing plasma, red cells, white cells, and platelets that circulates through the body, carrying essential substances.

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Example: The image shows blood components like red cells, white cells, platelets, and plasma flowing through a vessel.

Front

Plasma Noun

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[plaz-muh]

Back

Plasma

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The yellowish, liquid component of blood, mostly made of water, that holds blood cells in suspension for transport.

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Example: Plasma is the yellowish liquid in blood, holding cells in suspension for transport.

Front

Hemoglobin Noun

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[hee-muh-gloh-bin]

Back

Hemoglobin

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An iron-rich protein found in red blood cells that captures and transports oxygen from the lungs to the body's tissues.

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Example: The image shows hemoglobin's structure with labeled chains and heme group, explaining how it carries oxygen in red blood cells.

Front

Platelets Noun

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[pleyt-lits]

Back

Platelets

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Small, colorless cell fragments in the blood that are essential for forming clots to stop or prevent bleeding.

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Example: The image shows a labeled diagram of a platelet, highlighting its parts like vesicles and granules, which help in blood clotting.

Front

Pulse Noun

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[puhls]

Back

Pulse

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The rhythmic expansion and contraction of arteries as blood is pumped by the heart, which indicates the heart rate.

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Example: The image shows the heart and arteries, illustrating how blood flow creates a pulse.

Front

Esophagus Noun

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[uh-sof-uh-guhs]

Back

Esophagus

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A muscular tube connecting the throat with the stomach, which moves food down through wave-like muscular contractions.

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Example: The image shows the esophagus as a tube connecting the throat to the stomach, illustrating its role in the digestive system.