What mucosa-associated lymphatic tissue (MALT) traps pathogens entering the nasal and oral cavities?
A) tonsils B) Peyer's patches C) appendix D) lymph nodes
Answer: A
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The uterine epithelium is broken down by which structure of the blastocyst?
A) allantois B) cytotrophoblast C) syncytiotrophoblast D) blastocoele E) amnion
In the ascending limb of the loop of Henle, the filtrate will always be ________.
A) in equilibrium with the the medullary interstitial fluid B) of a lower osmolarity than the medullary interstitial fluid C) a higher osmolarity than the medullary interstitial fluid D) the same osmolarity as the filtrate in the descending limb of the loop of Henle E) a higher osmolarity than the filtrate in the descending limb of the loop of Henle
Every amino acid has a central carbon atom to which all of the followings are attached except
A) a hydrogen atom. B) a phosphate group. C) an amino group. D) a carboxyl group. E) a variable side group labeled as R.
Which organ filters blood, regulates blood volume and chemical makeup?
A) kidney B) ureter C) liver D) urinary bladder E) urethra