A chemical signal that has both endocrine and neural roles is 

(1) melatonin

(2) calcitonin

(3) epinephrine

(4) cortisol

Fight or flight reactions cause activation of 

1. the parathyroid glands, leading to increased metabolic rate

2. the kidney, leading to suppression of reninangiotensin-aldosterone pathway

3. the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine

4. the pancreas leading to a reduction in the blood sugar levels

Injury to adrenal cortex is not likely to affect the secretion of which one of the following ?
1. Aldosterone
2. Both androstenedione and dehydroepiandrosterone
3. Adrenalin
4. Cortisol

Which one of the following pairs of organs includes only the endocrine glands?

1. Parathyroid and adrenal

2. Pancreas and parathyroid

3. Thymus and testes

4. Adrenal and ovary

Feeling the tremor of an earthquake a scared resident of seventh floor of a multistoryed

building starts climbing down the stairs rapidly. Which hormone initiated this action?

1. Thyroxine

2. Adrenaline

3. Glucagon 

4. Gastrin