___________ targets osteoclasts when blood calcium levels are too low, thus causing an increase in the concentration of calcium in the blood?
a. Aldosterone
b. Thyroid hormone
c. Cortisol
d. Parathyroid hormone
e. Calcitonin
D
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Darryl began smoking when he was 13. He witnessed the majority of his family members and friends smoke while growing up. Even though Darryl is now an epidemiologist and understands the effects of smoking, he has had a difficult time quitting
Which of the following had the most significant influence on Darryl's personal choice to begin smoking? A) Peer pressure B) Curiosity C) Marketing from cigarette companies D) Age
Which of the following characteristics of a vector represents magnitude?
A. its angle of orientation B. its length C. its direction D. all of the above
There are four muscle tendons involved in forming the rotator cuff of the shoulder.
Answer the following statement true (T) or false (F)
In the visual pathway providing sensory action potentials to the brain, the first cells that are capable of initiating action potentials are
A. rod cells. B. lateral geniculate cells. C. bipolar cells. D. cone cells. E. ganglion cells.