Question 1

A patient presents with excessive thirst and large volumes of dilute urine. Laboratory tests reveal low levels of antidiuretic hormone (ADH). Which gland is primarily responsible for the production of ADH, and what is another name for this hormone?

Accepted Answer

Hypothalamus; also called vasopressin

Question 2

A patient is diagnosed with Addison’s disease, which is characterized by insufficient production of certain hormones. Which gland is affected, and which hormone is most likely deficient?

Accepted Answer

Adrenal cortex; cortisol

Question 3

Which hormone is secreted by the anterior pituitary and stimulates the thyroid gland to produce its hormones? Provide the formula for the hormone.

Accepted Answer

Thyroid-stimulating hormone ($$TSH)$$

Question 4

A patient with a history of iodine deficiency develops a goiter. Which hormone's production is directly affected by this deficiency, and what is the physiological consequence?

Accepted Answer

Thyroxine ($$T_4$$); decreased metabolic rate

Question 5

Which hormone is most important for regulating blood calcium levels, and what is its primary target organ?

Accepted Answer

Parathyroid hormone ($$PTH$$); bones

Question 6

A patient with Cushing’s syndrome is likely to have elevated levels of which hormone, and what is a common symptom associated with this condition?

Accepted Answer

Cortisol; muscle wasting

Question 7

Which gland is responsible for the maturation of T lymphocytes, and what happens to this gland as a person ages?

Accepted Answer

Thymus; it atrophies

Question 8

A patient with diabetes mellitus is unable to regulate blood glucose levels. Which two hormones produced by the pancreas are primarily involved in this regulation?

Accepted Answer

Insulin and glucagon

Question 9

Which hormone is produced by the pineal gland, and what is its primary function?

Accepted Answer

Melatonin; regulation of circadian rhythms

Question 10

A patient with acromegaly has abnormal enlargement of the hands, feet, and face. Which hormone is overproduced, and by which gland?

Accepted Answer

Growth hormone; anterior pituitary

Question 11

Which hormone is produced by the adrenal cortex and is essential for sodium reabsorption in the kidneys? Provide the formula for this hormone.

Accepted Answer

Aldosterone ($$Ald)$$

Question 12

Which hormone is released from the adrenal medulla in response to short-term stress, and what is its effect on the body?

Accepted Answer

Epinephrine; increases heart rate and blood glucose

Question 13

A patient with Graves’ disease exhibits symptoms of hyperthyroidism. Which hormone is overproduced, and what is a common symptom?

Accepted Answer

Thyroxine ($$T_4$$); weight loss

Question 14

Which hormone stimulates the development of ovarian follicles in females and spermatogenesis in males, and from which gland is it secreted?

Accepted Answer

Follicle-stimulating hormone ($$FSH$$); anterior pituitary

Question 15

Which hormone is stored in the posterior pituitary but produced in the hypothalamus, and what is its primary function?

Accepted Answer

Oxytocin; stimulates uterine contractions and milk ejection

Question 16

Which hormone is released in response to low blood glucose levels, and what is its effect on the liver?

Accepted Answer

Glucagon; stimulates glycogen breakdown

Question 17

Which gland produces gonadocorticoids, and what is their primary function?

Accepted Answer

Adrenal cortex; supplement sex hormones

Question 18

A child is diagnosed with pituitary dwarfism. Which hormone is deficient, and what is the consequence?

Accepted Answer

Growth hormone; short stature with normal proportions

Question 19

Which hormone is released from the anterior pituitary and stimulates the adrenal cortex to produce glucocorticoids? Provide the formula for this hormone.

Accepted Answer

Adrenocorticotropic hormone ($$ACTH)$$

Question 20

Which hormone is responsible for water reabsorption in the kidneys, and what is the effect of its deficiency?

Accepted Answer

Antidiuretic hormone ($$ADH$$); diabetes insipidus

Endocrine System Review – Step-by-Step Study Guidance

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