DIAGNOSTIC PROTOCOLS IN
ENDOCRINOLOGY QUESTION SET WITH
RATIONALES AND HORMONAL REGULATION
AND DIAGNOSTIC TESTING REVIEW 2026
◉ Hypothalamus.
Answer: Portion of the diencephalon of the brain, forming the floor
and part of the lateral wall of the third ventricle; activates, controls
and integrates the peripheral autonomic nervous system, endocrine
processes, and many somatic functions.
◉ Adrenal Gland.
Answer: One on top of each kidney; regulates sodium and electrolyte
balance; affects carbohydrate, fat and protein metabolism;
influences the development of sexual characteristics; and sustains
the fight or flight response.
◉ Thyroid Gland.
Answer: Located in the anterior part of the neck; controls the rate of
body metabolism and growth and produces thyroxine (T4),
triiodothyronine (T3) and thyrocalcitonin.
◉ Pancreas.
,Answer: Located posteriorly to the stomach; influences
carbohydrate metabolism, indirectly influences fat and protein
metabolism, and produces insulin and glucagon.
◉ Ovaries.
Answer: Located in the pelvic cavity; produce estrogen and
progesterone.
◉ Testes.
Answer: Located in the scrotum; control the development of
secondary sex characteristics and produce testosterone.
◉ Negative Feedback Loop.
Answer: A regulatory mechanism in which a system responds to a
change by initiating responses that will counteract the change.
◉ Radioactive Iodine Uptake.
Answer: Thyroid function test measures the absorption of an iodine
isotope to determine how the thyroid gland is functioning.
◉ Diabetes Insipidus.
Answer: Characterized by excretion of large amounts of dilute urine,
polydipsia, dehydration, inability to concentrate urine, low urine
, specific gravity, fatigue, muscle pain and weakness, headache,
postural hypotension, and tachycardia.
◉ Syndrome of Inappropriate Antidiuretic Hormone Secretion.
Answer: Signs include fluid volume overload, changes in level of
consciousness, weight gain, hypertension, tachycardia, anorexia,
nausea, vomiting, and hyponatremia.
◉ Addison's Disease.
Answer: Hyposecretion of adrenal cortex hormones; may be primary
or secondary; can be fatal if left untreated.
◉ Addisonian Crisis.
Answer: Characterized by severe headache, severe abdominal, leg,
and lower back pain, generalized weakness, irritability, confusion,
severe hypotension, and shock.
◉ Cushing's Disease and Syndrome.
Answer: Characterized by generalized muscle wasting and
weakness, moon face, buffalo hump, truncal obesity, hirsutism,
hyperglycemia, hypertension, and fragile skin.
◉ Primary Hyperaldosteronism (Conn's Syndrome).
ENDOCRINOLOGY QUESTION SET WITH
RATIONALES AND HORMONAL REGULATION
AND DIAGNOSTIC TESTING REVIEW 2026
◉ Hypothalamus.
Answer: Portion of the diencephalon of the brain, forming the floor
and part of the lateral wall of the third ventricle; activates, controls
and integrates the peripheral autonomic nervous system, endocrine
processes, and many somatic functions.
◉ Adrenal Gland.
Answer: One on top of each kidney; regulates sodium and electrolyte
balance; affects carbohydrate, fat and protein metabolism;
influences the development of sexual characteristics; and sustains
the fight or flight response.
◉ Thyroid Gland.
Answer: Located in the anterior part of the neck; controls the rate of
body metabolism and growth and produces thyroxine (T4),
triiodothyronine (T3) and thyrocalcitonin.
◉ Pancreas.
,Answer: Located posteriorly to the stomach; influences
carbohydrate metabolism, indirectly influences fat and protein
metabolism, and produces insulin and glucagon.
◉ Ovaries.
Answer: Located in the pelvic cavity; produce estrogen and
progesterone.
◉ Testes.
Answer: Located in the scrotum; control the development of
secondary sex characteristics and produce testosterone.
◉ Negative Feedback Loop.
Answer: A regulatory mechanism in which a system responds to a
change by initiating responses that will counteract the change.
◉ Radioactive Iodine Uptake.
Answer: Thyroid function test measures the absorption of an iodine
isotope to determine how the thyroid gland is functioning.
◉ Diabetes Insipidus.
Answer: Characterized by excretion of large amounts of dilute urine,
polydipsia, dehydration, inability to concentrate urine, low urine
, specific gravity, fatigue, muscle pain and weakness, headache,
postural hypotension, and tachycardia.
◉ Syndrome of Inappropriate Antidiuretic Hormone Secretion.
Answer: Signs include fluid volume overload, changes in level of
consciousness, weight gain, hypertension, tachycardia, anorexia,
nausea, vomiting, and hyponatremia.
◉ Addison's Disease.
Answer: Hyposecretion of adrenal cortex hormones; may be primary
or secondary; can be fatal if left untreated.
◉ Addisonian Crisis.
Answer: Characterized by severe headache, severe abdominal, leg,
and lower back pain, generalized weakness, irritability, confusion,
severe hypotension, and shock.
◉ Cushing's Disease and Syndrome.
Answer: Characterized by generalized muscle wasting and
weakness, moon face, buffalo hump, truncal obesity, hirsutism,
hyperglycemia, hypertension, and fragile skin.
◉ Primary Hyperaldosteronism (Conn's Syndrome).
