The enlarged portion of the thoracic duct is called the:
Lacteal
Hilum
Right lymphatic duct
Cisterna chyli
The Correct Answer is D
A. Lacteal is a lymphatic vessel located in the villi of the small intestine that absorbs fats, not the enlarged portion of the thoracic duct.
B. Hilum refers to the area on an organ where vessels, nerves, or ducts enter or leave, but it is not the enlarged portion of the thoracic duct.
C. The Right lymphatic duct is a separate duct that drains lymph from the right side of the body, not the enlarged portion of the thoracic duct.
D. Cisterna chyli is the enlarged, sac-like structure at the lower end of the thoracic duct, where lymph from the lower body and digestive organs (containing chyle) is collected before being transported into the thoracic duct.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Attenuation is the process of weakening or reducing the virulence (ability to cause disease) of a pathogen, making it less harmful. This weakened form can then be used in the preparation of vaccines, allowing the immune system to respond without causing disease.
B. Antitoxin refers to antibodies or other substances that neutralize toxins, not the process of reducing a pathogen's virulence.
C. Complement refers to a group of proteins that play a role in the immune response, enhancing the ability to clear pathogens, but it is not related to the process of preparing vaccines.
D. Vaccine is a preparation used to stimulate the immune system, but the process of preparing the vaccine (such as attenuation) is different from the vaccine itself.
Correct Answer is B
Explanation
A. Jaundice is caused by a buildup of bilirubin in the blood, typically due to liver or bile duct issues, not a blockage of lymph flow.
B. Edema occurs when there is an accumulation of fluid in tissues, which can result from a blockage in the lymphatic system (called lymphedema). This disrupts the normal drainage of lymph, causing swelling.
C. Varicose veins are swollen, twisted veins, typically caused by poor blood circulation, not lymphatic blockage.
D. Anemia is a condition where there is a deficiency of red blood cells or hemoglobin, and it is not related to a blockage of lymph flow.
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