Chapter 20- The Lymphatic System and Lymphoid Organs and Tissues Assignment - Chapter 20 The Lymphatic System and Lymphoid Organs and Tissues For this

Chapter 20- The Lymphatic System and Lymphoid Organs and Tissues Assignment

This preview shows page 1 - 2 out of 3 pages.

Chapter 20: The Lymphatic System and Lymphoid Organs and Tissues For this assignment, please read the chapter and answer the questions below. Please type your answers in red or blue color. Please note that points may be deducted if answers are not submitted in these colors. Functions of the Lymphatic System: The lymphatic system is comprised of a network of vessels that transport body fluids from interstitial spaces back to the venous system. Special vessels called lacteals transport fats from the intestines to the circulatory system. The organs of the lymphatic system help defend against foreign matter infectious disease , viruses, toxins, and cancer cells. Lymphatic Pathways: Lymphatic pathways start as lymphatic capillaries that merge to form larger vessels that empty into the circulatory system. Lymph capillary: Lymphatic capillaries are tiny, closed -ended tubes that extend into tissue spaces. They receive tissue fluid through their thin walls; once inside, tissue fluid is called lymph . Lymph vessel: The walls of lymphatic vessels are thinner than veins. Like veins, lymphatic vessels also have semilunar valves on the inside to prevent backflow of lymph. Larger lymphatic vessels pass through lymph nodes and merge to form lymphatic trunks . Lymph trunks & ducts: The lymphatic trunks drain lymph from the body into two large lymphatic ducts: the thoracic and right lymphatic duct. From what regions of the body do these two ducts receive lymph?
Image of page 1
Image of page 2

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture