Question

question 2
the adrenal medulla hormones have target cells where?
glucocorticoids
catecholamines
the heart
the adrenal cortex

question 3
osteoblasts and osteoclasts are targets for
calcitonin
parathyroid hormone
thryoid hormone
a and b

Explanation:

For Question 2: Adrenal medulla hormones like epinephrine and norepinephrine (catecholamines) act on various tissues including the heart. Glucocorticoids are from the adrenal cortex, and the adrenal medulla hormones don't target the adrenal cortex.
For Question 3: Calcitonin acts on osteoclasts to inhibit bone - resorption and parathyroid hormone acts on osteoblasts and osteoclasts to regulate calcium levels. Thyroid hormone is not mainly targeted at these cells for calcium - related regulation.

Answer:

Question 2: C. the heart
Question 3: D. a and b