Functions of Blood in Human Body
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Questions and Answers

Which component of blood is mainly responsible for transporting solutes like nutrients and hormones?

  • Leukocytes
  • Plasma (correct)
  • Platelets
  • Erythrocytes
  • What is the primary role of erythrocytes in gas exchange?

  • Carrying immune cells to the site of infection
  • Transporting carbon dioxide to the tissues
  • Transporting oxygen from the lungs to the tissues (correct)
  • Regulating ion concentrations in tissues
  • How does blood contribute to the maintenance of body temperature?

  • By transporting excess heat away from metabolizing tissues (correct)
  • By regulating pH levels in the body
  • By forming blood clots at injury sites
  • By producing heat in the lungs
  • What is the pH range typically maintained by blood?

    <p>7.35-7.45</p> Signup and view all the answers

    Which function of blood is primarily involved in preventing excessive blood loss?

    <p>Blood clotting</p> Signup and view all the answers

    Which type of blood cells primarily helps in immune functions?

    <p>Leukocytes</p> Signup and view all the answers

    What role does blood play in stabilizing blood pressure?

    <p>Maintaining blood volume in circulation</p> Signup and view all the answers

    What happens to blood pH when blood composition fluctuates due to metabolic activity?

    <p>It remains constant due to buffer systems</p> Signup and view all the answers

    Which function of blood helps it to regulate ion concentrations in the tissues?

    <p>Distributing solutes</p> Signup and view all the answers

    What is NOT a function of blood?

    <p>Facilitating nerve impulse transmission</p> Signup and view all the answers

    Study Notes

    Functions of Blood

    • Gas Exchange: Oxygen is transported from lungs to tissues by erythrocytes; carbon dioxide is carried back to lungs by both erythrocytes and plasma.
    • Solute Distribution: Plasma carries nutrients, hormones, waste products, and ions, regulating their concentrations in tissues.
    • Immune Functions: Blood serves as a transport medium for leukocytes and immune proteins, allowing them to reach various tissues for defense against pathogens.
    • Blood Clotting: Upon vessel injury, platelets and specific proteins aggregate to form clots, crucial for sealing wounds and preventing blood loss.
    • Temperature Regulation: Blood dissipates heat produced by metabolic activities, aiding in the maintenance of a stable body temperature.
    • Acid-Base Homeostasis: Blood pH is maintained between 7.35 and 7.45 through buffering systems and plasma proteins, ensuring a stable internal environment.
    • Blood Pressure Stability: Blood volume is a key determinant of blood pressure, with sufficient blood volume essential to maintain pressure in circulation.

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    Description

    Explore the essential functions of blood, including gas exchange and solute distribution in the human body. Test your knowledge on how erythrocytes and plasma play critical roles in transporting oxygen, carbon dioxide, nutrients, hormones, and waste. This quiz is geared towards understanding the physiological significance of blood.

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