Biology Chapter 1.4 Circulation
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Questions and Answers

What percentage of total body water is made up of intracellular fluid (ICF)?

  • 67% (correct)
  • 50%
  • 75%
  • 26%
  • Which component is NOT found in blood?

  • Red blood cells
  • Platelets
  • Plasma
  • Nerve cells (correct)
  • What is the primary function of coelomic fluid in some invertebrates?

  • Temperature regulation
  • Nutrient absorption
  • Waste storage
  • Support and structure (correct)
  • Which of the following is NOT considered a transport fluid?

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

    Which fluid bathes tissues and collects waste products and immune cells?

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

    What role does cerebrospinal fluid play?

    <p>Nourishment and protection of the brain and spinal cord</p> Signup and view all the answers

    What type of fluids are produced by organs and glands to perform specific functions?

    <p>Secretory fluids</p> Signup and view all the answers

    Which of the following is NOT a function of coelomic fluid?

    <p>Releasing enzymes for digestion</p> Signup and view all the answers

    What is one primary role of coelomic fluid in invertebrates?

    <p>Lubricate internal organs to reduce friction</p> Signup and view all the answers

    Which of the following is a key function of lymph in the body?

    <p>Collect excess fluid from tissues and assist in immune defense</p> Signup and view all the answers

    How does coelomic fluid vary among different animal groups?

    <p>It varies in complexity and composition across different species</p> Signup and view all the answers

    What type of protoplasmic streaming is characterized by cytoplasm flowing in a circular pattern?

    <p>Rotational streaming</p> Signup and view all the answers

    What is the primary difference between coelomic fluid in invertebrates and vertebrates?

    <p>Invertebrates rely more on coelomic fluid for internal functions than vertebrates</p> Signup and view all the answers

    Which of the following organisms primarily exhibit open circulatory systems?

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

    Which component is NOT typically found in lymph?

    <p>Red blood cells</p> Signup and view all the answers

    Why is fat absorption an important function of lymph?

    <p>It transports dietary fats to the bloodstream as chylomicrons</p> Signup and view all the answers

    What is a primary disadvantage of an open circulatory system?

    <p>Limited circulation distances</p> Signup and view all the answers

    What type of protoplasmic streaming allows organelles to move in opposite directions along specific tracks?

    <p>Shuttle streaming</p> Signup and view all the answers

    What role do lymph nodes play in the lymphatic system?

    <p>Filtrate and destroy harmful substances</p> Signup and view all the answers

    In which type of circulatory system does blood flow through vessels?

    <p>Closed circulatory system</p> Signup and view all the answers

    What mechanism helps move lymph through the lymphatic system?

    <p>Muscle contractions and respiratory movements</p> Signup and view all the answers

    Why is protoplasmic streaming essential for cells?

    <p>It aids in efficient waste removal.</p> Signup and view all the answers

    Which of the following statements is true regarding gas exchange in an open circulatory system?

    <p>Gas exchange occurs directly with the surrounding environment.</p> Signup and view all the answers

    What type of organism is likely to have high activity levels and needs for efficient circulation?

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

    What primary role do red blood cells (RBCs) serve in the body?

    <p>Carry oxygen from the lungs to tissues</p> Signup and view all the answers

    Which component of blood is primarily responsible for transporting hormones?

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

    How does chronic stress affect lymphatic health?

    <p>Weakens the immune system</p> Signup and view all the answers

    Which nutrient, when included in the diet, supports immune function?

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

    What is the function of platelets in the blood?

    <p>Help in blood clotting</p> Signup and view all the answers

    What is a potential consequence of lymphedema?

    <p>Swelling and discomfort</p> Signup and view all the answers

    What primary component of blood makes up about 55% of its volume?

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

    What is a role of blood in temperature regulation?

    <p>It distributes heat throughout the body.</p> Signup and view all the answers

    What is the primary purpose of osmoregulation in organisms?

    <p>To maintain the osmotic pressure of body fluids</p> Signup and view all the answers

    Which of the following best describes how saltwater fish osmoregulate compared to freshwater fish?

    <p>They have more solutes in body fluids to prevent water loss</p> Signup and view all the answers

    What role do excretory organs play in osmoregulation?

    <p>They filter waste products and excess solutes from the body</p> Signup and view all the answers

    Which of the following excretory organs is associated with crustaceans?

    <p>Green glands</p> Signup and view all the answers

    How do flame cells function in the excretory system of flatworms?

    <p>They filter waste using cilia to draw in fluid</p> Signup and view all the answers

    What mechanism do organisms use to adjust solute concentrations in response to environmental needs?

    <p>Permeability control of their membranes</p> Signup and view all the answers

    Which of the following is NOT a common excretory organ for vertebrates?

    <p>Malpighian tubules</p> Signup and view all the answers

    What is the significance of maintaining the balance of water and solutes in body fluids?

    <p>It enables proper cellular functions like nutrient transport</p> Signup and view all the answers

    Study Notes

    Circulation and Types of Circulating Fluid

    • Circulating fluids can be categorized by location:
      • Intracellular Fluid (ICF): Comprises about 67% of total body water, found inside cells, containing electrolytes, proteins, and nutrients.
      • Extracellular Fluid (ECF): Accounts for about 26% of total body water, includes blood and lymph.

    Blood

    • Blood plays a critical role in transportation:
      • Contains plasma (55% of blood volume), which includes water, proteins (albumins, antibodies), electrolytes, hormones, glucose, and waste products.
      • Blood Cells: Comprises 45% of blood volume; includes:
        • Red Blood Cells (RBCs): Transport oxygen to tissues using hemoglobin.
        • White Blood Cells (WBCs): Integral to the immune system, combating infections.
        • Platelets: Vital for blood clotting processes.

    Lymph and Its Role

    • Lymph is vital for fluid balance and immune defense:
      • Comprised of clear fluid similar to blood plasma but without red blood cells.
      • Contains lymphocytes, fats, waste products, and cell debris.
      • Lymphatic system functions:
        • Collects excess fluid, preventing swelling.
        • Filters pathogens and debris through lymph nodes.
        • Transports dietary fats as chylomicrons.

    Coelomic Fluid

    • Coelomic fluid supports various functions in animals:
      • Acts as a hydrostatic skeleton in invertebrates, providing support.
      • Facilitates transport of nutrients, gases, and waste in simpler circulatory systems.
      • Plays a role in lubrication of internal organs to reduce friction.
      • In some species, involved in reproductive processes.

    Open and Closed Circulation

    • Open Circulation:

      • Found in invertebrates (e.g., insects, mollusks); blood flows freely in body cavities.
      • Simple heart pumps hemolymph into sinuses, leading to low pressure and less efficient circulation.
      • Specialized organs handle gas exchange and waste removal directly with the environment.
    • Closed Circulation:

      • Present in vertebrates (e.g., humans, fish); blood travels through a network of vessels.
      • Provides more efficient transport of oxygen and nutrients over longer distances compared to open systems.

    Osmoregulation

    • Essential for maintaining the osmotic balance of body fluids, composed primarily of water (60% of body).
    • Organisms adjust solute concentrations and membrane permeability to regulate fluids.
    • Different strategies include excreting excess solutes and waste' crucial for preventing toxic buildup.

    Excretory Organs in Animals

    • Specialized organs remove metabolic waste:

      • Invertebrates:
        • Flame cells (flatworms): Filter waste using cilia.
        • Nephridia (earthworms): Filter blood waste through excretory pores.
        • Malpighian tubules (insects): Absorb waste from hemolymph and release into the digestive tract.
        • Green glands (crustaceans): Filter blood waste through ducts.
    • Vertebrates:

      • Kidneys: Main organs for filtering blood, eliminating waste and producing urine.

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    Description

    Explore the types of circulating fluids in the human body, focusing on intracellular fluid (ICF) and extracellular fluid (ECF). Understand the significance of blood, tissue fluid, and lymph in maintaining bodily functions. This quiz will test your knowledge on these essential concepts.

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