Skip to main content
Back

Endocrine, Blood, and Lymphatic Systems - Anatomy & Physiology

Control buttons has been changed to "navigation" mode.
1/20

Terms in this set (20)

  • What is the primary role of the endocrine system?
    To regulate cellular activity throughout the body using chemical messengers called hormones, facilitating growth, development, reproduction, and homeostasis.
  • What are hormones?
    Chemical messengers secreted by endocrine glands that cause ongoing and long-term changes in target tissues.
  • How do the nervous and endocrine systems work together?
    They collaborate to maintain homeostasis by monitoring and regulating cell activity throughout the body.
  • What stimulates endocrine glands to produce hormones?
    Various signals including neural input, chemical changes in the blood, and other hormones trigger hormone secretion.
  • What stops endocrine glands from producing hormones?
    Negative feedback mechanisms where the presence of sufficient hormone levels inhibits further secretion.
  • What are the main components of blood?
    Blood consists of formed elements (erythrocytes, leukocytes, platelets) and plasma.
  • What is the function of erythrocytes?
    Carry oxygen from the lungs to body tissues using hemoglobin.
  • What are leukocytes and their general role?
    White blood cells that defend the body against infection and foreign substances.
  • What are platelets and their function?
    Also called thrombocytes, they are involved in blood clotting to prevent bleeding.
  • What physical characteristics of blood are important?
    Blood's viscosity, color, pH, and temperature affect its function and flow.
  • What are the four ABO blood groups?
    Blood types A, B, AB, and O classified by the presence or absence of antigens on erythrocytes.
  • What causes a transfusion reaction?
    Agglutination and hemolysis occur when incompatible blood types are mixed, causing immune response symptoms.
  • What are the two main parts of the lymphatic system?
    The lymphatic vessels and the lymphoid tissues and organs.
  • What is the role of the lymphatic system?
    To return excess tissue fluid to the bloodstream and provide immune defense.
  • What are nonspecific immune defenses?
    General defenses like fever and inflammation that hinder pathogen entry and spread.
  • What distinguishes specific immune responses?
    Targeted immune reactions involving lymphocytes that recognize specific pathogens.
  • How does blood transport hormones?
    Blood carries hormones from endocrine glands to target cells and organs throughout the body.
  • What is homeostasis?
    The body's ability to maintain a stable internal environment despite external changes.
  • What is the function of plasma in blood?
    Plasma transports nutrients, wastes, hormones, and gases and helps maintain blood pressure and volume.
  • What is agglutination in blood typing?
    The clumping of red blood cells caused by antigen-antibody reactions during incompatible transfusions.