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25 Cards in this Set
- Front
- Back
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The lymphatic system consists of all the following except: |
A) blood
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Which of the following applies to the thoracic duct?
A) it drains the entire body above the diaphragm B) it empties its contents into the subclavian vein C) it carries blood into the lymphatic system D) it arises in the vessels of the brain |
B) it empties its contents into the subclavian vein
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Lymphatic capillaries resemble blood capillaries because lymphatic capillaries
A) have the same permeability as blood capillaries B) lead to the vena cava C) have a lining of endothelium D) are thick-walled tubes |
C) have a lining of endothelium
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The fluid that passes through the lymphatic vessels
A) flows toward the lungs B) passes from the lymphatic vessels into the arteries C) enters the left ventricle of the heart through the right thoracic duct D) moves in a single direction toward the heart |
D) moves in a single direction toward the heart
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The T-lymphocytes and B-lymphocytes are the major cells of the
A) lymph nodes B) lymphatic vessels C) adrenal gland D) thymus |
A) lymph nodes
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All the following are important functions of the lymph nodes except
A) they serve as sites for production of antibodies B) they remove foreign material phagocytized by macrophages C) they are the sites where antigens stimulate the immune system D) they function in the production of neutrophils, eosinophils, and basophils |
D) they function in the production of neutrophils, eosinophils, and basophils
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Lymph nodes may be located in the human body in the tissues of the
A) stomach and brain B) groin and neck C) ventricle and atrium D) thyroid gland and adrenal gland |
B) groin and neck
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The nodules of lymphoid tissue found in the wall of the intestinal tract are known as
A) Hashimoto's nodes B) Grave's region C) DiGeorge's nodes D) Peyer's patches |
D) Peyer's patches
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In the human body, the thymus is located
A) along the femoral artery B) in the medulla oblongata C) in the mediastinum of the upper thorax D) between the 19th and 20th vertebrae |
C) in the mediastinum of the upper thorax
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The movement of fluid through the lymphactic vessels is assisted by
A) pressure from the right ventricle B) pressure of contracting skeletal muscles C) movement of phagaocytes such as macro phages D) movement of red blood cells |
B) pressure of contracting skeletal muscles
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The thymus is largest and most visible
A) in the teenage years B) in senior citizen C) between the ages of six and 12 years D) in the fetal stage |
D) in the fetal stage
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All the following functions are associated with the spleen except
A) it provides a filtration system for blood B) it is the site of red blood cell breakdown C) it is a storage depot for blood D) it is the major site of white blood cell formation |
D) it is the major site of white blood cell formation
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Which of the following describes the location of the spleen in the human body?
A) anterior to the diaphragm in the lower thoracic cavity B) lateral to the vertebral column along the posterior thoracic wall C) within the pelvic cavity D) posterior to the diaphragm in the upper portion of the abdominal cavity |
D) posterior to the diaphragm in the upper portion of the abdominal cavity
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Which of the following is not likely to be found in the lymph?
A) red blood cells B) protein molecules C) microorganisms D) macrophages |
A) red blood cells
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Those lymphatic vessels that are rich in fat
A) are found only in the brain B) are known as lacteals C) enter the left atrium of the heart D) are found only within the spleen |
B) are known as lacteals
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All the cells of the immune system arise from
A) cells in the sinoatrial node B) primitive cells in the bone marrow C) primitive cells in the thymus D) cells located primarily in the pons of the brain |
B) primitive cells in the bone marrow
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T-lymphocytes are so-named because they are produced primarily in the
A) thyroid gland B) tissues of the thorax C) tissues stimulated by the trigeminal nerve D) thymus |
D) thymus
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The immune system in humans becomes fully functional
A) about three months before birth B) at birth C) six months after birth D) about one year after birth |
C) six months after birth
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All the following characteristics apply to antigens except
A) they may be cellular substances such as macromolecules B) they may consist of proteins or polysaccharides C) the list of possible antigens is very limited D) they stimulate the immune system |
C) the list of possible antigens is very limited
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The cells that set the immune process into motion are phagocytic cells known as
A) eosinophils B) macrophages C) plasma cells D) antigens |
B) macrophages
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The activity of T-lymphocytes brings about
A) the production of antibodies by plasma cells B) the release of antigens by bacteria C) cell-mediated immunity D) the reaction between antigens and antibody molecules |
C) cell-mediated immunity
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The lymphokines secreted by cytotoxic T-lymphocytes increase the activity of
A) red blood cells B) brain cells C) macrophages D) B-lymphocytes |
C) macrophages
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Once they have reacted with antigen molecules, the B-lymphocytes of the immune system
A) leave the lymphoid tissue and proceed to the antigen site B) change into red blood cells to secrete toxins C) change into macrophages to perform phagocytosis D) convert into plasma cells to secrete antibodies |
D) convert into plasma cells to secrete antibodies
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Which of the following is true of antibody molecules?
A) there are five different types of antibody molecules B) all antibody molecules are composed of polysaccharide C) an antibody molecule is often depicted as a Y D) one end of an antibody is highly specific for binding an antigen |
B) all antibody molecules are composed of polysaccharide
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Antibody molecules neutralize invading microorganisms by all of the following methods except
A) they bind bacteria together in a meshlike pattern B) they encourage phagocytosis of microorganisms C) they set off a series of reaction breaking microbial membranes D) they rob microorganisms of the oxygen they need for metabolism |
D) they rob microorganisms of the oxygen they need for metabolism
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