After the first cell is fertilized, division and diversification take place to create the 60 trillio...

The body’s police force is taught to neutralize its enemies (microbes and viruses), which reproduce ...

Red blood cells, the body’s police force, are created in the bone marrow but sometimes, the factory ...

The steadfast red blood cells have come down with the flu! Pedrito and Psi get some help from the Te...

Pedrito cuts his finger with a dirty knife. While the platelets try to cure the wound, the white blo...

Globus takes Hemo and Globina on a tour through the human body’s cathedral: the heart and circulator...

Air bubbles travel from the nose to the lungs. In the swampy, mucus-filled areas, they meet the red ...

Teacher introduces Hemo and Globina to the most mysterious organ: the brain. They learn about behavi...

The body’s messengers run around sending and receiving information about feelings like hunger and co...

Eyes are magical! They break down and transmit images to the brain. What happens if a speck of dust ...

The ear is composed of cells that sense vibrations and transmit them to the brain. Then, the brain t...

Skin is the first barrier against external aggression and helps eliminate waste. From cuts and scrap...

Yum! Candy! But sugar strengthens the bacteria around the gums and attacks the tooth enamel, which c...

After a tasty meal the food starts its journey to the stomach where it will be broken down depending...

The liver is fundamental. It doesn’t weigh a lot but it uses almost as much oxygen as the heart! It ...

Toxic elements head to the kidneys where they are categorized. The good ones are salvaged but the ba...

The huge lymph network transports everything to the body’s factories. Infectious intruders beware! T...

The architecture that protects the body’s organs is magnificent! However, even the slightest fractur...

Muscles account for almost half the weight of the human body. They also need a ton of energy to do t...

Combat teams act as preventative barriers and are prepared to defend the cell’s nucleus against toxi...

Vaccines bring us so many benefits! People who don’t get vaccinated run the risk of contracting a di...

At the heart of the hypothalamus, Teacher shows us how this region sends out orders to satisfy all t...

A walk in the forest is the perfect way to learn about the extraordinary food chain that exists betw...

Pedrito is 8 years old and is tired after a long day. When he goes to bed, Teacher and his helpers o...

Pedrito wants to know why his grandpa can’t play ball anymore, so he tells Pedrito an old story abou...