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Erythrocytes quiz #1

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  • What is the primary function of erythrocytes, and how does their structure support this function?
    The primary function of erythrocytes is the transport of oxygen and carbon dioxide gases. Their biconcave shape increases surface area for gas exchange and enhances flexibility, allowing them to move through narrow capillaries efficiently.
  • How do erythrocytes differ from most other body cells in terms of size, organelles, and internal contents?
    Erythrocytes are about three times smaller than most other body cells, lack a nucleus and organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus, and are packed with hemoglobin, unlike most other cells.
  • What role does the protein spectrin play in erythrocytes?
    Spectrin is a cytoplasmic protein that helps maintain the biconcave shape of erythrocytes and allows them to return to their original form after squeezing through narrow capillaries.
  • Why is the biconcave shape of erythrocytes important for their function in the circulatory system?
    The biconcave shape increases the surface area to volume ratio, maximizing gas exchange efficiency, and provides flexibility for erythrocytes to pass through tight capillaries.
  • What is the main function of erythrocytes in the body?
    The main function of erythrocytes is to transport oxygen and carbon dioxide gases throughout the body.
  • How does the biconcave shape of erythrocytes benefit their function?
    The biconcave shape increases the surface area to volume ratio for efficient gas exchange and provides flexibility to move through narrow capillaries.
  • What key structural feature do erythrocytes lack compared to most other body cells?
    Erythrocytes lack a nucleus and organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus.
  • What is the role of the protein spectrin in erythrocytes?
    Spectrin helps maintain the biconcave shape of erythrocytes and allows them to return to their original form after squeezing through narrow capillaries.
  • How does the size of erythrocytes compare to most other body cells?
    Erythrocytes are about three times smaller than most other body cells, with a diameter of approximately 7.5 micrometers.
  • What protein are erythrocytes packed with, and what is its function?
    Erythrocytes are packed with hemoglobin, a protein that is crucial for the transport of oxygen and carbon dioxide gases.
  • What is the primary function of red blood cells?
    The primary function of red blood cells is the transport of oxygen and carbon dioxide gases.
  • Which cells are the most numerous in blood?
    Red blood cells (erythrocytes) are the most numerous cells in blood.
  • Approximately how long do red blood cells live?
    Red blood cells typically live for about 120 days.
  • Where do all red blood cells in an adult originate?
    All red blood cells in an adult originate in the bone marrow.
  • What is the medical term for red blood cells?
    The medical term for red blood cells is erythrocytes.
  • Which blood cells are most numerous in the body?
    Erythrocytes (red blood cells) are the most numerous blood cells in the body.
  • Which blood cells carry oxygen in the body?
    Red blood cells (erythrocytes) carry oxygen in the body.
  • How would you best describe red blood cells?
    Red blood cells are small, biconcave, anucleate cells packed with hemoglobin, specialized for gas transport.
  • What is the main function of red blood cells?
    The main function of red blood cells is to transport oxygen and carbon dioxide gases.
  • What is another name for red blood cells?
    Another name for red blood cells is erythrocytes.
  • What happens to damaged red blood cells?
    Damaged red blood cells are removed from circulation and broken down, primarily in the spleen and liver.
  • What is crenation of red blood cells?
    Crenation of red blood cells refers to the shrinkage and formation of spiky projections on their surface, usually due to exposure to a hypertonic solution.
  • What is the job of red blood cells?
    The job of red blood cells is to transport oxygen from the lungs to tissues and carry carbon dioxide from tissues to the lungs.
  • What is the function of red blood cells?
    The function of red blood cells is to transport oxygen and carbon dioxide gases throughout the body.
  • What are the functions of red blood cells?
    Red blood cells function to transport oxygen from the lungs to tissues and carbon dioxide from tissues to the lungs.
  • What is the purpose of red blood cells?
    The purpose of red blood cells is to facilitate the transport of oxygen and carbon dioxide in the blood.
  • What do red blood cells do?
    Red blood cells transport oxygen and carbon dioxide between the lungs and body tissues.
  • How long do red blood cells typically survive?
    Red blood cells typically survive for about 120 days.
  • Approximately how many red blood cells are found in a drop of blood?
    A single drop of blood contains millions of red blood cells.
  • How long do red blood cells live?
    Red blood cells live for approximately 120 days.
  • How long does transfused blood stay in your body?
    Transfused red blood cells typically survive in the body for about 120 days, similar to native red blood cells.
  • What structural feature of red blood cells increases their efficiency in gas transport?
    The biconcave shape of red blood cells increases their surface area to volume ratio, enhancing gas transport efficiency.
  • What protein is abundant in red blood cells and is essential for their function?
    Hemoglobin is the abundant protein in red blood cells essential for oxygen and carbon dioxide transport.
  • Why do red blood cells lack a nucleus and organelles?
    Red blood cells lack a nucleus and organelles to maximize space for hemoglobin and enhance their ability to transport gases.