Question

question 4
the absorptive cells of the intestines are target cells for which of the following?
parathyroid hormone
glucocorticoids
cortisol
calcitonin

question 5
calcitonin has target cells at
the large intestines
kidneys
liver
osteoblasts
a, b, and c

Explanation:

For Question 4: Glucocorticoids act on absorptive cells of the intestines to influence nutrient - absorption and metabolism. Parathyroid hormone mainly acts on bones, kidneys and intestines for calcium regulation but not specifically on absorptive cells. Cortisol is a glucocorticoid but the more general term glucocorticoids is the appropriate answer here. Calcitonin is mainly involved in calcium regulation and not a major regulator of intestinal absorptive cells.
For Question 5: Calcitonin acts on osteoblasts to decrease blood calcium levels by promoting calcium deposition in bones. It does not have its main target cells in the large intestines, kidneys or liver for its primary calcium - regulating function.

Answer:

Question 4: glucocorticoids
Question 5: osteoblasts