Quiz on Hormones and Glands

Which of the following is NOT a characteristic of hormones?

• Secreted directly into the blood

• Act on distant target organs

• Produced by exocrine glands

• Needed in small quantities

Which gland is called the “master gland” and why?

• Thyroid, because it controls metabolism

• Adrenal, because it prepares the body for stress

• Pituitary, because it controls other glands

• Pancreas, because it regulates sugar

The pancreas is both an endocrine and exocrine gland because:

• It stores fat and digests it

• It produces insulin and enzymes

• It controls heartbeat and reflexes

• It has ducts and neurons

Which hormone is responsible for lowering blood sugar levels?

• Glucagon

• Insulin

• Adrenaline

• Thyroxine

Which of the following is an example of a feedback mechanism?

• Knee-jerk reflex

• Blood clotting

• Increase in insulin after eating

• Sweating in summer

Which gland releases hormones in response to signals from the hypothalamus?

• Pancreas

• Adrenal

• Pituitary

• Thyroid

Adrenaline is often called the “fight or flight” hormone because it:

• Makes a person sleepy

• Regulates digestion

• Prepares the body to respond to stress

• Controls kidney function

What happens if the thyroid gland produces too little thyroxine?

• Increased metabolism

• Weight loss

• Goitre and stunted growth

• Faster heart rate

Which hormone regulates the balance of calcium in the blood?

• Thyroxine

• Insulin

• Parathormone

• Adrenaline

In a negative feedback loop, an increase in blood glucose will cause:

• Increase in glucagon

• Decrease in insulin

• Increase in insulin

• No hormonal response