The process which increases the chance of a neutrophil or monocyte engulfing an invader is _____.
A) phagocytosis
B) neutralization
C) complement fixation
D) opsonization
Ans: D) opsonization
Opsonins are antibodies that coat the surface of pathogens such as bacteria making them more susceptible to phagocytosis.
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The jugular notch is
A. where the manubrium meets the sternal body. B. where the clavicles articulate with the manubrium. C. where the ribs articulate with the sternum. D. on the superior manubrium.
If a patient's tricuspid valve was leaking during systole, what would happen?
A) regurgitation back into the right atrium B) regurgitation back into the superior vena cava C) regurgitation back into the left atrium D) regurgitation back into the aorta E) regurgitation back into the pulmonary trunk
The ________ is an elastic epithelial layer between the vagina and vestibule, which, if present, is often torn during first intercourse
A) zona pellucida B) prepuce C) isthmus D) vaginal fornix E) hymen
Why is the blood-testis barrier important?
A) because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system B) because some blood contents are toxic to the spermatozoa C) because immature sperm cells lose their motility when they encounter any blood component D) Actually, the blood-testis barrier has no function.