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Anatomy Week 11 Quiz
| Question | Answer |
|---|---|
| Masses of lymphoid tissue located in a protective ring under the mucous membranes in the mouth and the back of the throat are called lymphatic capillaries. lymph nodes. tonsils. anastomoses. | tonsils. |
| Hassall corpuscles are part of the: thymus. spleen. tonsils. thoracic duct. | thymus. |
| The primary organ of the lymphatic system is the thalamus. thyroid. thymus. spleen. | thymus. |
| Which substance can destroy pathogens by lowering the pH to a level at which they cannot function? Hydrochloric acid Mucus Enzymes Sebum | Hydrochloric acid |
| A type of blood cell produced by lymph nodes is called a(n) eosinophil. erythrocyte. neutrophil. monocyte. | monocyte. |
| The cisterna chyli: originates in the right lymphatic duct. originates in the thoracic duct. is the storage area for hormones made by the thymus gland. filters the chyle coming from the small intestine. | originates in the thoracic duct. |
| During their residence in the thymus, pre-T cells develop into _____, cells that proliferate as rapidly as any in the body. cytotoxic T cells antigen-presenting cells thymocytes memory T cells | thymocytes |
| An infection in the thumb may result in enlargement of the _____ nodes. submental inguinal superficial cervical superficial cubital | superficial cubital |
| The lymph nodes located just above the bend of the elbow are called the _____ lymph nodes. inguinal axillary supratrochlear superficial cervical | supratrochlear |
| Lymph capillaries called lacteals are located in the: spleen. liver. thymus. small intestine. | small intestine. |
| Each cortical nodule is composed of packed lymphocytes that surround a less dense area called a germ center. trabecula. lymph node. germinal center. | germinal center. |
| The lymphatic system, like the circulatory system, is a closed circuit. True False | False |
| The type of immune mechanism that provides a general defense by acting against anything recognized as “not self” is called: nonspecific immunity. specific immunity. autoimmune. none of the above. | nonspecific immunity. |
| Lacteals: drain into the right lymphatic duct. are the lymphatics in the villi of the small intestines. are able to absorb fat from the digestive system. Both B and C are correct. | Both B and C are correct. |
| The main difference between the composition of lymph and interstitial fluid and the composition of plasma is the _____ percentage of _____ in lymph and interstitial fluid. lower; proteins higher; proteins lower; fats higher; fats | lower; proteins |
| Which of the following is not a lymph organ? Thymus Spleen Pancreas Tonsils | Pancreas |
| Because T cells attack pathogens more directly, T-cell immune mechanisms are classified as _____ immunity. antibody-mediated cell-mediated nonspecific None of the above are correct. | cell-mediated |
| Lymph ducts empty into the circulatory system, draining into the: jugular vein. subclavian veins. superior vena cava. inferior vena cava. | subclavian veins. |
| Interferon inhibits the spread of: A. viruses. B. bacteria. C. B cell antibodies that attack cancer. D. Both A & B E. Both B & C | D. Both A & B |
| The size of lymph nodes varies from _____ mm to more than _____ mm in diameter. 1; 20 10; 35 20; 45 30; 65 | 1; 20 |
| The internal environment of the human body is protected by the _____, which is(are) referred to as the first line of defense. skin connective tissue white blood cells muscle tissue | skin |
| The lymph nodes located in the groin are called the: inguinal lymph nodes. axillary lymph nodes. submaxillary group. submental group. | inguinal lymph nodes. |
| Lymphatics resemble veins except that lymphatics: have thinner walls. contain more valves. contain lymph nodes located at certain intervals along their course. All of the above are correct. | All of the above are correct. |
| Adaptive immunity, part of the body’s third line of defense, is orchestrated by two different classes of a type of white blood cell called the leukocyte. macrophage. lymphocyte. phagocyte. | lymphocyte. |
| About half of the lymph flowing through the thoracic duct comes from the: liver. small intestine. spleen. Both A and B are correct. | Both A and B are correct. |
| The spleen is located in the _____ region. right hypochondriac left hypochondriac epigastric left lumbar | left hypochondriac |
| The breast —the mammary gland and surrounding tissue— is drained by the: a) lymphatics that originate in and drain the skin over the breast with the exception of the areola and nipple. b) lymphatics that originate in and drain the substance of the | d) Both A and B are correct |
| Antibodies are proteins of the family called glucoproteins. immunoglobulins. globulins. antigens. | immunoglobulins. |
| The tonsils located near the posterior opening of the nasal cavity are called the _____ tonsils. palatine pharyngeal lingual laryngeal | pharyngeal |
| Which of the following is a true statement? The wall of the lymphatic capillary consists of a multiple layer of flattened endothelial cells. Lymphatic and blood capillary networks are dependent on each other. Lymph from the entire body, except | Lymph from the entire body, except the upper right quadrant, drains eventually into the thoracic duct. |