physiology

An overview of the endocrine system that discusses its anatomy, functions, diseases, disorders, and other related topics.

This book describes the jobs our kidneys perform, including filtering waste products from our blood and producing hormones that keep body systems well-regulated.

Describes the noses of different animals and how they are used.

Describes the organs and sense of touch of such diverse animals as the scorpion, catfish, sloth, platypus, and gecko.

Discusses the changes that take place in a boy's body during puberty, including information on the body's changing size and shape, the growth spurt, reproductive organs, pubic hair, beards, pimples, voice changes, wet dreams, and puberty in girls.

Presents information about how animals use their senses to communicate, find food, protect themselves, and more. Includes related activities.

The senses of animals are described and compared to those of a human boy on a summer evening.

Discusses the changes that take place in a girl's body during puberty, including information on the body's changing size and shape, pubic hair, breasts, the reproductive organs, the menstrual cycle, and puberty in boys.

Explores the mysteries and workings of the human brain.