The LM at the top of this page is magnified 400 times (400x). If the ocular lens used to make this image has a magnification of 10x, what is the magnification of the objective lens?
A) 4x
B) 40x
C) 400x
D) 390x
E) 410x
Answer: B
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Which send blood to either esophageal arteries or esophageal branches to supply the esophagus with blood?
A. Thoracic aorta B. Bronchial arteries and left gastric artery C. Thoracic aorta and left gastric artery D. Bronchial arteries E. Left gastric artery
Which of the following statements about the loop of Henle of juxtamedullary nephrons is correct?
a. The ascending limb is freely permeable to H2O and NaCl. b. The filtrate is isotonic as it enters the loop, hypertonic at the tip of the loop, and hypotonic as it leaves the loop. c. The descending limb actively transports NaCl out of the tubule into the interstitial fluid. d. All of the above. e. None of the above.
The taste cortex is located in the ________.
A. parietal lobe B. insula C. frontal lobe D. temporal lobe