Question

question 17 (1 point)
epinephrine and norepinephrine are not only hormones, but they are also:
a) neurotransmitters in the central nervous system
b) neurotransmitters in the sympathetic nervous system
c) enzymes
d) all of the above
question 18 (1 point)
in times of stress, the adrenal gland promotes the synthesis of glucose from non - carbohydrate substrates by secreting which of the following hormone?
thyroxine
acth
cortisol
glucagon

Explanation:

• Question 17: Epinephrine and norepinephrine are hormones secreted by the adrenal medulla. They also act as neurotransmitters in the sympathetic nervous system. They are not enzymes, and they are not neurotransmitters in the central nervous system.
• Question 18: Cortisol is a hormone secreted by the adrenal cortex. It promotes gluconeogenesis (synthesis of glucose from non - carbohydrate substrates) during stress. Thyroxine is from the thyroid gland, ACTH (adrenocorticotropic hormone) is from the anterior pituitary and stimulates the adrenal cortex to secrete cortisol, and glucagon is from the pancreas.

Answer:

• Question 17: B. neurotransmitters in the sympathetic nervous system
• Question 18: cortisol