Endocrine System Quiz

Which gland is called the "master gland" of the endocrine system?

• Thyroid

• Adrenal

• Pituitary

• Pancreas

What type of hormone is insulin?

• Steroid

• Peptide

• Amine

• Eicosanoid

Negative feedback in the endocrine system primarily helps to:

• Increase hormone secretion indefinitely

• Maintain hormone levels within normal limits

• Stop hormone secretion permanently

• Activate the immune system

Which hormone is secreted by the hypothalamus to stimulate the anterior pituitary?

• Growth hormone

• Thyrotropin-releasing hormone (TRH)

• Cortisol

• Dopamine

Which of the following is NOT a characteristic of peptide hormones?

• Water soluble

• Rapid onset of action

• Can cross the cell membrane easily

• Bind to cell surface receptors

Which hormone primarily regulates calcium metabolism?

• Parathyroid hormone

• Growth hormone

• Insulin

• Adrenaline

The term "agonist" refers to a drug that:

• Blocks receptor activation

• Mimics the action of a hormone

• Has no effect on receptors

• Inhibits hormone synthesis

Which hormone is synthesized and secreted by the adrenal medulla?

• Cortisol

• Aldosterone

• Epinephrine

• Insulin

Which of these is a classic example of an endocrine disorder caused by hormone deficiency?

• Hyperthyroidism

• Hypothyroidism

• Cushing's syndrome

• Acromegaly

The half-life of peptide hormones is generally:

• Hours to days

• Minutes to seconds

• Weeks

• Months