7 1-60. Reflex arc. 1. A 2. B 3. C 4. D 1-61. Hormones secreted by the endocrine system are 1. secreted directly into the gland, tissue, or organ it influences 2. directed to the gland, tissue, organ by a duct system 3. secreted into the circulatory system 4. typically produced in large quantities 1-62. The overproduction of which hormone leads to acromegaly? 1. Somatotropin 2. Oxytocin 3. Gonadotropin 4. Thyroxin 1-63. Which of the following diseases is characterized by a deficiency of the antidiuretic hormone? 1. Myxedema 2. Diabetes insipidus 3. Hyperthyroidism 4. Addison’s disease 1-64. An insufficient secretion of thyroxin is characterized by all of the following symptoms EXCEPT 1. weight gain 2. fatigue 3. profuse sweating 4. slowed heart rate 1-65. Calcium levels in the blood are controlled by which of the following hormones? 1. Thyroxin 2. Vasopressin 3. Oxytocin 4. Parathormone 1-66. Electrolyte balance is a function of the hormone produced by the 1. posterior lobe of the pituitary gland 2. anterior lobe of the pituitary gland 3. cortex of the adrenal gland 4. medulla of the adrenal gland 1-67. A metabolic response to epinephrine includes which, if any, of the symptoms listed below? 1. Decreased heart rate 2. Increased blood pressure 3. Respiratory distress 4. None of the above 1-68. What hormone is produced by the alpha cells of the islands of Langerhans in the pancreas? 1. Glucagon 2. Insulin 3. Norepinephrine 4. Androgens 1-69. The cornea is part of the protective outer layer of the eye called the 1. sclera 2. conjunctiva 3. choroid 4. crystalline body