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Circulatory and Respiratory Anatomy definitions Flashcards

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Circulatory and Respiratory Anatomy definitions
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  • Circulation

    The process of transporting oxygen to cells for cellular respiration and removing carbon dioxide waste via the cardiovascular system.
  • Respiratory System

    System responsible for gas exchange, taking in oxygen and expelling carbon dioxide, involving structures like lungs, trachea, and alveoli, and driven by the diaphragm's movement.
  • Cellular Respiration

    The process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water, involving glycolysis, the citric acid cycle, and the electron transport chain.
  • Systemic Circulation

    The process where oxygenated blood is transported from the heart to the body's tissues and deoxygenated blood is returned to the heart, facilitating gas exchange and nutrient delivery.
  • Vasculature

    A network of blood vessels, including arteries, veins, and capillaries, that transport blood throughout the body, facilitating the exchange of gases, nutrients, and waste products.
  • Endothelium

    A thin layer of specialized epithelial cells lining the interior surface of blood and lymphatic vessels, playing a crucial role in vascular function, including blood flow regulation and barrier formation.
  • Veins

    Blood vessels that carry blood back to the heart, often containing valves to prevent backflow and relying on skeletal muscle contractions to aid blood flow due to lower pressure compared to arteries.
  • Capillaries

    Tiny blood vessels with walls one cell thick, facilitating the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues. They form networks called capillary beds for maximum surface area.
  • Hemoglobin

    A protein in red blood cells that binds oxygen via iron-containing heme groups, facilitating oxygen transport from lungs to tissues and carbon dioxide removal from tissues to lungs.
  • Diaphragm.

    A muscle sheet separating the thoracic and abdominal cavities, contracting to create negative pressure for lung ventilation.