In each set of terms given below, there is an odd one and cannot be grouped in the same category to which the other three belong. Identify the odd term in each set and name the category to which the remaining three belong. Example: Ovary, Fallopian tube, Ureter, Uterus. Odd term: Ureter. Category: Parts of female reproductive system.
Cortisone, Somatotropin, Adrenocorticotropic hormone, Vasopressin.
Topic: Pituitary hormones
Answer
Odd term: CORTISONE. Category of the others: HORMONES SECRETED BY THE PITUITARY GLAND.
Somatotropin (growth hormone) and ACTH come from the ANTERIOR pituitary; vasopressin (ADH) from the POSTERIOR pituitary. All three are pituitary hormones.
CORTISONE is secreted by the ADRENAL CORTEX, not the pituitary.
THE NEAT CONNECTION worth noticing: ACTH is the hormone that STIMULATES the adrenal cortex to secrete cortisone. So the two are directly linked — which is precisely what makes cortisone a plausible member of the group, and why the examiner chose it.
That relationship is also why the pituitary is called the MASTER GLAND: its TROPIC hormones (ACTH, TSH, FSH, LH) control other endocrine glands.
SOMATOTROPIN is simply another name for growth hormone — somato meaning body.