An investigator who conducts an experiment to determine how temperature changes affect the rate at which the heart beats is most likely a(n)
A. chemist.
B. biochemist.
C. anatomist.
D. physiologist.
Answer: D
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In the stress response, the process by which many structures are activated simultaneously is known as ________ activation.
Fill in the blank(s) with the appropriate word(s).
What triggers the release of parathyroid hormone (PTH)?
A) decreasing sodium ion concentration of the blood B) increasing calcium ion concentration of the blood C) increasing potassium ion concentration of the blood D) decreasing calcium ion concentration of the blood
Mineralocorticoids regulate the concentration of ________ and ________ ions in our blood.
A) iron; magnesium B) calcium; phosphorus C) water; glucose D) sodium; potassium
Mucus plays an important role in cleansing inhaled air. It is produced by ________ of the respiratory tract.
A. great alveolar cells B. the pleurae C. ciliated cells D. goblet cells E. squamous alveolar cells