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Which body system maintains fluid balance, absorbs lipids, and protects the body against pathogens?
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The specialized lymphatic capillaries located in the lining of the small intestines are called _____. They are specialized to absorb fat from the intestines.
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A&P2 Wk3 Assignment
| Question | Answer |
|---|---|
| Which body system maintains fluid balance, absorbs lipids, and protects the body against pathogens? | lymphatic system |
| The specialized lymphatic capillaries located in the lining of the small intestines are called _____. They are specialized to absorb fat from the intestines. | lacteals or lacteal |
| Listed are the general terms for the different segments of the lymphatic pathways of the body. Place them in the correct order, starting closest to the tissues at the top of the list and ending at the veins in the thorax. | 1. lymphatic capillaries 2. lymphatic vessels 3. lymphatic trunks 4. lymphatic ducts |
| Lymph is the fluid found ______. | within lymphatic capillaries |
| The segment of the the lymphatic pathway called the lymphatic vessels are most anatomically similar to which type of blood vessel? | veins |
| Indicate three functions of the lymphatic system. | fluid recovery from tissues absorption of lipids immunity |
| Lymph from lymphatic trunks empties into the one of the two ______. | collecting ducts |
| The function of a lacteal is to absorb Blank______. | fat |
| Within the tissues, the pressure within blood capillaries is responsible for filtering large molecules and blood cells out of the capillaries. T/F | False |
| Lymphatic pathways begin at the lymphatic capillaries which empty into lymphatic vessels. From there, fluid flows through lymphatic ______ into lymphatic ______, eventually emptying into veins in the thorax. | trunks; collecting ducts |
| Excess tissue fluid resulting from the failure of proper lymphatic drainage is called _____. | edema or lymphedema |
| The fluid contained in lymphatic vessels, which originates as tissue fluid, is called _____. | lymph or Lymph |
| Which of the following is NOT a mechanism that facilitates the movement of lymph fluid within lymphatic vessels? | cardiac pumping |
| Typical lymphatic vessels are anatomically very similar to ______. | cardiovascular veins |
| List three functions of lymph. | transport foreign particles to lymph nodes return to the bloodstream most of the small proteins filtered by the blood capillaries transport dietary fats to the bloodstream |
| Lymphatic trunks converge to form the largest of the segments of the lymphatic pathway, called ______. | collecting ducts |
| Capillary blood pressure filters ______ from the plasma. | water and small molecules |
| Edema is the Blank______. | accumulation of excess tissue fluid |
| List cell types found in lymphatic tissue. | lymphocytes and macrophages |
| Which two factors promote the movement of lymph through lymphatic vessels? | skeletal muscle contraction pressure changes during breathing |
| Encapsulated organs found in groups or chains along the paths of the larger lymphatic vessels throughout the body, except in the central nervous system, are the _____ . | lymph; nodes or node |
| Lymph transports foreign particles, such as bacteria and viruses, to lymphatic system structures called _____ _____. | lymph: nodes |
| In the progression from smaller to larger components of the lymphatic pathway, the lymphatic _____ join one of two collecting _____. | trunks or trunk; ducts or duct |
| The thymus is located in the mediastium, _____ to the aortic arch and _____ to the upper part of the body of the sternum. | anterior: posterior |
| Within the tissues, the pressure within blood capillaries is responsible for filtering large molecules and blood cells out of the capillaries. T/F | False |
| Name the tissue within the spleen that surrounds venous sinuses and contains numerous red blood cells (along with some lymphocytes and macrophages). | red pulp |
| List three cell types found in lymphatic tissue. | macrophages T cells B cells |
| A disease-causing agent is called a(n) ______. | pathogen |
| What structure(s) or area(s) is/are lacking lymph nodes? | central nervous system |
| Two mechanical barriers that prevent entry of pathogens into the body are ______ and ______. | skin mucosa |
| The encapsulated, bilobed lymphatic organ that shrinks with age is called the _____. | thymus |
| If the barrier defenses and other nonspecific defenses are penetrated by a pathogen, the third line of defense, ______, will try to eliminate it. | an adaptive, or specific, defense |
| Name the type of tissue that is distributed as tiny islands throughout the spleen, containing abundant lymphocytes. | white pulp |
| The two cell types responsible for adaptive immune responses are _____ and macrophages. | lymphocytes |
| The general term for a disease-causing organism or chemical is _____. | pathogen or pathogens |
| Any large molecule capable of triggering an immune response is called a(n) _____. | antigen, agglutinogen, or antigens |
| Mechanical barriers that prevent pathogens from entering the body are the _____ and the _____ membranes that line the passageways of the respiratory, digestive, urinary, and reproductive systems. | skin; mucous or mucus |
| The type of immune system cell carrying receptors that recognize nonself antigens is a(n) _____. | lymphocyte or lymphocytes |
| The ability to distinguish molecules that are part of the body from those that are foreign is integral to the _____ line of defense against pathogens. | third |
| T lymphocytes originate in the red bone marrow, then finish their maturation in the ______. | thymus |
| The adaptive immune response depends on the actions of ______. | lymphocytes and macrophages |
| Identify three age-related changes in the immune system. | With age, proportions of antibodies in different classes change (IgA and IgG increase, IgM and IgE decrease). Decline begins early in life, due in part to shrinkage of the thymus. The numbers of T cells diminish only slightly, although the response time declines. |
| An antigen is a molecule that can ______. | provoke an immune response |
| Which of the following acts as a mechanical barrier to pathogen entry into the body? | skin |
| Normally, an immune response occurs in response to the presence of ______ antigens. | nonself |
| The type of lymphocyte that is produced in the red bone marrow and matures in the thymus is a _____ cell. | T |
| Antibody response to antigens declines with age; therefore elderly people may require ______. | an extra dose of vaccines |
| Name the type of leukocyte that is produced in the red bone marrow and that matures in the thymus. | T cell |
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garrisonjr84