Which cell type differentiates into macrophages once it leaves the blood and migrates to the tissues?
Dendritic cells
Bacterial cells
Natural killer cells.
Monocyte cells
The Correct Answer is D
A. Dendritic cells: Dendritic cells are antigen-presenting cells that originate from precursor cells in the bone marrow, but they do not differentiate from monocytes.
B. Bacterial cells: Bacterial cells are pathogens and do not differentiate into any immune cells.
C. Natural killer cells: Natural killer cells are a type of lymphocyte involved in the innate immune response but do not differentiate from monocytes.
D. Monocyte cells: Monocytes are a type of white blood cell that, upon migrating into tissues, differentiate into macrophages, which play a key role in phagocytosis and immune response.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Mouth: Digestion in the mouth is primarily due to amylase, which breaks down carbohydrates, not trypsin.
B. Stomach: Trypsin is produced as trypsinogen in the pancreas and is activated in the small intestine. While trypsin is crucial for digestion, it is important in the small intestine.
C. Large intestine: The large intestine is mainly involved in water absorption, not digestion by enzymes like trypsin.
D. Oesophagus: The esophagus transports food but does not produce enzymes like trypsin.
Correct Answer is C
Explanation
A. Blood pumped into a ventricle in one minute: This describes venous return but not cardiac output.
B. Blood pumped into the atria in one minute: Cardiac output measures blood leaving the heart, not entering the atria.
C. Blood pumped by each ventricle in one minute: Cardiac output is the amount of blood ejected by each ventricle in one minute. It is calculated by multiplying stroke volume (the amount of blood ejected per beat) by heart rate.
D. Blood pumped out of an atrium in one minute: This describes atrial function but is not related to the definition of cardiac output.
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