physiology

An introduction to the human body and how it functions, including simple experiments which demonstrate the principles presented.

Dr. Brain and Geo board a ship that shrinks down to microscopic size and gets swallowed by Geo's friend Phoebe, trapping them in her stomach where they learn all about how the digestive system works.

Explores the way the human body works, the origins of human beings, and the various ways that humans live and organize themselves socially and culturally.

Diagrams with lift-the-flaps and brief, descriptive text describe the human body, covering the digestive system, breathing, blood, the brain, and the senses.

A series of simple experiments introduce the basic mechanisms in the human body and how they operate.

Being able to compare the structure and anatomy of different families of animals and detect their differences and similarities is an essential skill in life science studies. This book takes the reader through the basic anatomical features that characterize a broad range of animal families, including crustaceans, fish, and birds.

Describes unpleasant body functions that are necessary to keep people alive, such as gas, bowel movements, and sneezing.

Las ranas y los sapos son algunas de las ma?s confusas anfibios para clasificar. Mientras que algunos de sus atributos fi?sicos son muy fa?ciles de distinguir, si tenemos una mirada ma?s profunda a estos animales que encontramos no es asi? de sencillo. To?xico de piel y ojos saltones a sus ciclos de vida increi?ble, estas criaturas son tan interesantes para estudiar ya que son difi?ciles de clasificar. Una vez que se rompen la diferencia entre "verdad" las ranas y los "verdaderos" sapos, es fa?cil ver por que? tantas personas tienen problemas para establecer las dos criaturas aparte!.

Si una persona nunca cara a cara con un enorme animal hambriento, con dientes afilados, probablemente no les importari?a exactamente lo que los animales! Pero desde un lugar seguro, podemos decir si se trataba de un cocodrilo o caima?n que queri?a tomar un bocado? Mediante el examen de la estructura mandibular, dientes, y otras caracteri?sticas fi?sicas, podemos saber fa?cilmente estos dos animales aparte!.