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.
A) because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system
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Damage to which of the cranial nerves in the diagram would result in strabismus?
a) A b) B c) C d) E e) G
The layers of the digestive tract from the inside (lumen) to the outside are:
a. submucosa, mucosa, muscularis, serosa b. mucosa, submucosa, muscularis, serosa c. mucosa, submucosa, serosa, muscularis d. mucosa, serosa, submucosa, muscularis
A clinical sign of obstructive lung disease would be a reduced FEV1/FVC ratio, where "FVC" is "forced" VC
Indicate whether the statement is true or false.
Postganglionic axons from the celiac ganglion innervate the
A. gallbladder. B. spleen. C. stomach. D. liver. E. All of the choices are correct.