Answer to Question 1
ANS: D
The pituitary gland, located in the brain, is the master gland of the endocrine system. It has been called the master gland because through the negative feedback system, it exerts its control over the other endocrine glands.
Answer to Question 2
ANS: C
In a thyroid crisis, all the signs and symptoms of hyperthyroidism are exaggerated. Additionally, the patient may develop nausea, vomiting, severe tachycardia, severe hypertension, and occasionally hyperthermia up to 41 C (106 F). Extreme restlessness, cardiac arrhythmia, and delirium may also occur. The patient may develop heart failure and may die.