Isotopes of an element have
A) the same atomic number and same atomic weight.
B) different atomic numbers but the same atomic weight.
C) different atomic numbers and different atomic weights.
D) the same atomic number but different atomic weights.
D
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Increased levels of the hormone ________ will lead to decreased levels of calcium ion in the blood via inhibition of ________
A) thymosin; osteocytes B) calcitonin; osteoclasts C) PTH; osteocytes D) aldosterone; osteoclasts E) cortisol; osteoblasts
In response to decreased levels of aldosterone, the kidneys would likely produce
A) a decreased volume of urine. B) urine with a higher concentration of sodium ions. C) urine with a lower concentration of potassium ions. D) urine with a normal pH average of 6. E) urine with less urea.
In the mammary glands, 15 to 30 of these expanded chambers open onto the surface of each nipple.
A) lobes B) lobules C) lactiferous ducts D) lactiferous sinuses E) suspensory ligaments
What is another name for the epicardium?
A. The visceral layer of the serous pericardium B. The outer myocardium C. The serous layer of the parietal pericardium D. The serous endocardium E. The parietal layer of the serous pericardium