Chapter 6: The Circulatory System and the Lymphatic System
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Questions and Answers

What are the two fluids that move through the circulatory system?

  • Lymph and plasma
  • Blood and oxygen
  • Blood and plasma
  • Blood and lymph (correct)

    • What type of circulatory system do vertebrates have?

  • Direct circulatory system
  • Semiclosed circulatory system
  • Closed circulatory system (correct)
  • Open circulatory system

    • What English doctor showed that blood circulated throughout the body in one-way vessels?

  • Dr. John Smith
  • Dr. William Harvey (correct)
  • Dr. Thomas Harvey
  • Dr. Robert Harvey

    • What is the central organ of the cardiovascular system?

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

    What type of system is responsible for transporting nutrients and hormones to cells and removing waste products from cells?

    <p>Cardiovascular System</p> Signup and view all the answers

    What is the name of the system that collects and transports the fluid called lymph?

    <p>Lymphatic System</p> Signup and view all the answers

    What type of tissue makes up the middle layer of the heart's walls?

    <p>Cardiac muscle</p> Signup and view all the answers

    What ensures that the cardiac muscle gets plenty of oxygen?

    <p>The coronary artery</p> Signup and view all the answers

    What is the primary reason cardiac muscle cannot develop cramp?

    <p>It cannot respire anaerobically</p> Signup and view all the answers

    Which statement about the heart is true?

    <p>The heart is cone-shaped</p> Signup and view all the answers

    How many times does the average human heart beat in a lifetime?

    <p>Over 2.5 million times</p> Signup and view all the answers

    What type of muscle cells are richly supplied with mitochondria?

    <p>Cardiac muscle cells</p> Signup and view all the answers

    What is the main function of blood?

    <p>Transport nutrients and oxygen to cells</p> Signup and view all the answers

    Which component makes up the majority of blood composition?

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

    If lymph builds up around the ankles and feet, what is this condition called?

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

    What happens to the lymph if a person is inactive or has high blood pressure?

    <p>It builds up in tissues</p> Signup and view all the answers

    Which gland disappears from the body after the age of 10?

    <p>Thymus gland</p> Signup and view all the answers

    What is a simple precaution to prevent DVT during long-distance flights?

    <p>Moving feet and ankles regularly during the flight</p> Signup and view all the answers

    What is the turnover rate of red blood cells (RBCs) according to the text?

    <p>2 million per second</p> Signup and view all the answers

    Which of the following is NOT a characteristic of white blood cells (WBCs) according to the text?

    <p>Full of haemoglobin</p> Signup and view all the answers

    How do red blood cells (RBCs) differ from white blood cells (WBCs) in terms of lifespan according to the text?

    <p>RBCs have a shorter lifespan than WBCs</p> Signup and view all the answers

    Which feature allows red blood cells (RBCs) to pass through the smallest capillaries?

    <p>Biconcave shape</p> Signup and view all the answers

    What is the main function of lymphocytes among white blood cells (WBCs) according to the text?

    <p>Produce antibodies</p> Signup and view all the answers

    In which part of the body are white blood cells (WBCs) formed according to the text?

    <p>Bone marrow</p> Signup and view all the answers

    What is the primary function of Granulocytes (Cell B)?

    <p>Destroy bacteria by ingestion (phagocytosis)</p> Signup and view all the answers

    How do Platelets contribute to blood clotting?

    <p>Adhering to the wound site and releasing clotting factors</p> Signup and view all the answers

    What can happen if there is unwanted clotting of blood within blood vessels?

    <p>Brain cells may die causing a stroke</p> Signup and view all the answers

    What is the function of Lymphocytes (Cell A)?

    <p>Make antibodies or kill infected cells</p> Signup and view all the answers

    What is the lifespan of Platelets?

    <p>7-11 days</p> Signup and view all the answers

    What determines a person's blood group?

    <p>Presence of antigens on RBC surfaces</p> Signup and view all the answers

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