The directional migration of leukocytes along a chemical gradient is termed:
diapedesis
chemotaxis
margination
endocytosis
The Correct Answer is B
A. diapedesis: Diapedesis is the passage of leukocytes through capillary walls (emigration), not the directed movement along a chemical gradient.
B. chemotaxis: Chemotaxis is the directed migration of leukocytes toward higher concentrations of chemical signals (chemokines, complement fragments).
C. margination: Margination is the movement of leukocytes to the periphery of blood vessels (rolling/adhesion) prior to emigration.
D. endocytosis: Endocytosis is cellular uptake of material (including phagocytosis for microbes), not directional migration.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. overconsumption: That would describe overeating or hyperphagia, not cachexia.
B. poor nutrition: Related but not precise - cachexia involves complex metabolic changes (often in chronic disease) and is not simply inadequate intake.
C. a lack of enzymes: Enzyme deficiency is not the definition of cachexia.
D. a thin, wasted appearance: Cachexia denotes severe wasting (loss of weight, muscle mass and fat) producing a thin, emaciated appearance, commonly seen in chronic illnesses like cancer or advanced heart failure.
Correct Answer is B
Explanation
A. Macrophages: Macrophages are tissue-resident immune cells and are not normally present free in stool; their presence suggests mucosal inflammation or shedding.
B. Erythrocytes: Red blood cells (erythrocytes) in stool indicate gastrointestinal bleeding and are not a normal finding.
C. Parasites: Parasites in stool indicate infection/infestation and are not normal (they are abnormal/pathologic when present).
D. Blood: Blood in stool signifies GI bleeding and is not normal.
E. Bacteria: Bacteria are a normal and abundant component of feces (normal gut flora).
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.