This title is suitable for children of ages 8 to 9 years. Squirt may be a tiny gland, but young readers will learn just how important he is. This title explains the powerful effects of the pineal, pituitary, thyroid, and adrenal glands. The roles of the hypothalamus and pancreas will also be explored along with the function of hormones. There are sections on glandular problems, scientific discoveries, and amazing facts.