Which of the following is classified as killer, helper, regulator, and memory cells?
Vaccines
Antibodies
Granulocytes
The Correct Answer is C
A. Vaccines are preparations that stimulate the immune system to produce an immune response, but they are not classified as killer, helper, regulator, or memory cells.
B. Antibodies are proteins produced by B cells that help neutralize pathogens, but they are not classified as killer, helper, regulator, or memory cells.
C. Granulocytes are a type of white blood cell that includes neutrophils, eosinophils, and basophils, involved in the immune response. However, the correct classification of cells as "killer, helper, regulator, and memory" specifically refers to T cells (not granulocytes). T cells are the cells responsible for these roles:
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Lymph from the lower body drains into the thoracic duct.
B. Lymph from the left side of the head drains into the thoracic duct as well, which eventually empties into the systemic circulation.
C. Lymph from the right arm does not enter the thoracic duct. It drains into the right lymphatic duct, which then empties into the systemic circulation.
D. Lymph from the left arm drains into the thoracic duct along with lymph from other parts of the body.
Correct Answer is A
Explanation
A. Red blood cells are not typically found in lymph. Lymph is a clear fluid that circulates through the lymphatic system and normally does not contain red blood cells unless there is damage or leakage from blood vessels.
B. Proteins can be present in lymph, especially smaller ones that pass through capillary walls.
C. Water is a major component of lymph, making up the fluid part that helps transport cells and substances.
D. Lymphocytes are a key component of lymph, playing a central role in the immune response.
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