Endocrine System MCQs

Which of the following is NOT a function of the endocrine system?

• Releasing hormones into the blood

• Transmitting nerve impulses

• Controlling long-term body functions

• Affecting target organs

Endocrine glands are characterized by being:

• Ductless

• Having a duct system

• Releasing secretions to the body surface

• Releasing digestive enzymes

Which gland is often referred to as the Master Gland?

• Thyroid

• Adrenal

• Pituitary

• Pineal

The posterior pituitary gland stores and releases:

• GH and TSH

• Oxytocin and ADH

• ACTH and FSH

• Prolactin and LH

Which hormone is secreted by the pineal gland?

• Melatonin

• Cortisol

• Insulin

• Thyroxine

The primary function of Thyroid Stimulating Hormone (TSH) is to:

• Stimulate the adrenal cortex

• Stimulate the thyroid gland

• Stimulate growth

• Stimulate milk production

Which of the following is a steroid hormone?

• Insulin

• Epinephrine

• Cortisol

• Thyroxine

The second messenger system is typically used by which type of hormones?

• Steroid hormones

• Thyroid hormones

• Peptide and amine hormones

• All of the above

Which of these is a common second messenger?

• cAMP

• DNA

• mRNA

• ATP

Steroid hormones exert their action by:

• Binding to cell membrane receptors

• Activating adenylate cyclase

• Binding to cytoplasmic receptors and then affecting DNA

• Using cAMP as a second messenger