N521 - ENDOCRINE QUICK UNDERSTANDING COMPLETE
QUESTIONS WITH ANSWERS 100% VERIFIED 2025 LATEST UPDATED
ALREADY GRADED A+
Question 1
Which gland is often referred to as the "master gland" due to its role in controlling other
endocrine glands?
A) Thyroid gland
B) Adrenal gland
C) Pancreas
D) Ovaries/Testes
E) Pituitary gland
Correct Answer: E) Pituitary gland
Rationale: The pituitary gland secretes hormones that regulate the function of other
endocrine glands, earning it the nickname "master gland."
Question 2
Which hormone is primarily responsible for regulating the body's metabolism?
A) Insulin
B) Cortisol
C) Estrogen
D) Growth Hormone
E) Thyroid hormone (T3 and T4)
Correct Answer: E) Thyroid hormone (T3 and T4)
Rationale: Thyroid hormones (thyroxine/T4 and triiodothyronine/T3) are crucial for
controlling the rate of metabolism in almost all body cells.
Question 3
A patient presents with weight gain, fatigue, cold intolerance, and constipation. These symptoms
are most consistent with a deficiency in which hormone?
A) Insulin
B) Cortisol
C) Growth Hormone
D) Parathyroid Hormone
E) Thyroid hormone
Correct Answer: E) Thyroid hormone
Rationale: These are classic symptoms of hypothyroidism, a condition caused by insufficient
thyroid hormone production.
Question 4
Which hormone is released in response to high blood glucose levels, facilitating glucose uptake
by cells?
A) Glucagon
B) Cortisol
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C) Epinephrine
D) Growth Hormone
E) Insulin
Correct Answer: E) Insulin
Rationale: Insulin, secreted by the pancreas, is the primary hormone that lowers blood
glucose by promoting its uptake into cells.
Question 5
Which hormone is released in response to low blood glucose levels, stimulating glucose
production and release from the liver?
A) Insulin
B) Cortisol
C) Epinephrine
D) Growth Hormone
E) Glucagon
Correct Answer: E) Glucagon
Rationale: Glucagon, also secreted by the pancreas, works antagonistically to insulin by
raising blood glucose levels.
Question 6
A patient presents with polyuria, polydipsia, and polyphagia, along with unexplained weight loss.
These are classic symptoms of:
A) Hypothyroidism
B) Hypoglycemia
C) Cushing's Syndrome
D) Addison's Disease
E) Diabetes Mellitus Type 1
Correct Answer: E) Diabetes Mellitus Type 1
Rationale: The "three P's" (polyuria, polydipsia, polyphagia) are the cardinal symptoms of
uncontrolled diabetes, particularly Type 1, due to insulin deficiency.
Question 7
The adrenal medulla primarily secretes which class of hormones?
A) Glucocorticoids
B) Mineralocorticoids
C) Androgens
D) Estrogens
E) Catecholamines (epinephrine and norepinephrine)
Correct Answer: E) Catecholamines (epinephrine and norepinephrine)
Rationale: The adrenal medulla is responsible for secreting the stress hormones epinephrine
(adrenaline) and norepinephrine (noradrenaline), which are catecholamines.
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Question 8
Which hormone is a potent mineralocorticoid that regulates sodium and potassium balance and
blood pressure?
A) Cortisol
B) Androgen
C) Estrogen
D) Progesterone
E) Aldosterone
Correct Answer: E) Aldosterone
Rationale: Aldosterone, produced by the adrenal cortex, plays a key role in maintaining
electrolyte and fluid balance, directly impacting blood pressure.
Question 9
A patient with a "moon face," "buffalo hump," purple striae, and unexplained weight gain is most
likely experiencing an excess of which hormone?
A) Thyroid hormone
B) Growth Hormone
C) Aldosterone
D) Epinephrine
E) Cortisol
Correct Answer: E) Cortisol
Rationale: These are classic signs of Cushing's Syndrome, which is caused by prolonged
exposure to excessive cortisol levels.
Question 10
Hyperpigmentation of the skin and mucous membranes, particularly in areas exposed to sun or
friction, is a characteristic symptom of:
A) Cushing's Syndrome
B) Hyperthyroidism
C) Diabetes Mellitus
D) Pheochromocytoma
E) Addison's Disease
Correct Answer: E) Addison's Disease
Rationale: Hyperpigmentation is a distinctive symptom of Addison's Disease, caused by
insufficient adrenal cortical hormone production (primarily cortisol and aldosterone),
leading to increased ACTH and subsequent melanin stimulation.
Question 11
Which hormone is primarily responsible for the regulation of calcium levels in the blood?
A) Calcitonin
B) Vitamin D (activated form)
C) Growth Hormone
QUESTIONS WITH ANSWERS 100% VERIFIED 2025 LATEST UPDATED
ALREADY GRADED A+
Question 1
Which gland is often referred to as the "master gland" due to its role in controlling other
endocrine glands?
A) Thyroid gland
B) Adrenal gland
C) Pancreas
D) Ovaries/Testes
E) Pituitary gland
Correct Answer: E) Pituitary gland
Rationale: The pituitary gland secretes hormones that regulate the function of other
endocrine glands, earning it the nickname "master gland."
Question 2
Which hormone is primarily responsible for regulating the body's metabolism?
A) Insulin
B) Cortisol
C) Estrogen
D) Growth Hormone
E) Thyroid hormone (T3 and T4)
Correct Answer: E) Thyroid hormone (T3 and T4)
Rationale: Thyroid hormones (thyroxine/T4 and triiodothyronine/T3) are crucial for
controlling the rate of metabolism in almost all body cells.
Question 3
A patient presents with weight gain, fatigue, cold intolerance, and constipation. These symptoms
are most consistent with a deficiency in which hormone?
A) Insulin
B) Cortisol
C) Growth Hormone
D) Parathyroid Hormone
E) Thyroid hormone
Correct Answer: E) Thyroid hormone
Rationale: These are classic symptoms of hypothyroidism, a condition caused by insufficient
thyroid hormone production.
Question 4
Which hormone is released in response to high blood glucose levels, facilitating glucose uptake
by cells?
A) Glucagon
B) Cortisol
,[Type here]
C) Epinephrine
D) Growth Hormone
E) Insulin
Correct Answer: E) Insulin
Rationale: Insulin, secreted by the pancreas, is the primary hormone that lowers blood
glucose by promoting its uptake into cells.
Question 5
Which hormone is released in response to low blood glucose levels, stimulating glucose
production and release from the liver?
A) Insulin
B) Cortisol
C) Epinephrine
D) Growth Hormone
E) Glucagon
Correct Answer: E) Glucagon
Rationale: Glucagon, also secreted by the pancreas, works antagonistically to insulin by
raising blood glucose levels.
Question 6
A patient presents with polyuria, polydipsia, and polyphagia, along with unexplained weight loss.
These are classic symptoms of:
A) Hypothyroidism
B) Hypoglycemia
C) Cushing's Syndrome
D) Addison's Disease
E) Diabetes Mellitus Type 1
Correct Answer: E) Diabetes Mellitus Type 1
Rationale: The "three P's" (polyuria, polydipsia, polyphagia) are the cardinal symptoms of
uncontrolled diabetes, particularly Type 1, due to insulin deficiency.
Question 7
The adrenal medulla primarily secretes which class of hormones?
A) Glucocorticoids
B) Mineralocorticoids
C) Androgens
D) Estrogens
E) Catecholamines (epinephrine and norepinephrine)
Correct Answer: E) Catecholamines (epinephrine and norepinephrine)
Rationale: The adrenal medulla is responsible for secreting the stress hormones epinephrine
(adrenaline) and norepinephrine (noradrenaline), which are catecholamines.
, [Type here]
Question 8
Which hormone is a potent mineralocorticoid that regulates sodium and potassium balance and
blood pressure?
A) Cortisol
B) Androgen
C) Estrogen
D) Progesterone
E) Aldosterone
Correct Answer: E) Aldosterone
Rationale: Aldosterone, produced by the adrenal cortex, plays a key role in maintaining
electrolyte and fluid balance, directly impacting blood pressure.
Question 9
A patient with a "moon face," "buffalo hump," purple striae, and unexplained weight gain is most
likely experiencing an excess of which hormone?
A) Thyroid hormone
B) Growth Hormone
C) Aldosterone
D) Epinephrine
E) Cortisol
Correct Answer: E) Cortisol
Rationale: These are classic signs of Cushing's Syndrome, which is caused by prolonged
exposure to excessive cortisol levels.
Question 10
Hyperpigmentation of the skin and mucous membranes, particularly in areas exposed to sun or
friction, is a characteristic symptom of:
A) Cushing's Syndrome
B) Hyperthyroidism
C) Diabetes Mellitus
D) Pheochromocytoma
E) Addison's Disease
Correct Answer: E) Addison's Disease
Rationale: Hyperpigmentation is a distinctive symptom of Addison's Disease, caused by
insufficient adrenal cortical hormone production (primarily cortisol and aldosterone),
leading to increased ACTH and subsequent melanin stimulation.
Question 11
Which hormone is primarily responsible for the regulation of calcium levels in the blood?
A) Calcitonin
B) Vitamin D (activated form)
C) Growth Hormone
