Four hormones given below. One of the listed hormones does not share a characteristic that the other three do. Circle the hormone that doesn't belong with the others and explain why it is singled out. What characteristic is missing? Sometimes there may be multiple reasons why the hormone doesn't belong with the others.

Which is the "odd hormone"?

a. ACTH

b. oxytocin

c. LH

d. FSH

Which is the "odd hormone"?

a. Aldosterone

b. Cortisol

c. Epinephrine

d. ADH

Which is the "odd hormone"?

a. PTH

b. testosterone

c. LH

d. FSH

Which is the "odd hormone"?

a. Insulin

b. Cortisol

c. Calcitonin

d. Glucagon

a. oxytocin

d. ADH

a. PTH

c. Calcitonin

Explanation:

a. oxytocin

ACTH, LH, FSH are all secreted from the anterior pituitary gland except for oxytocin that is secreted from the posterior pituitary gland.

d. ADH

Aldosterone, cortisol and epinephrine are all produced in the adrenal gland except for ADH that is produced in the hypothalamus.

a. PTH

Testosterone, LH and FSH regulate the reproductive system; FSH doesn't regulate the reproductive system, but primarily regulates serum calcium.

c. Calcitonin

Insulin, cortisol and glucagon regulate blood glucose levels; Calcitonin doesn't regulate blood glucose level, but is primarily involved in regulating blood calcium and phosphate levels.