Siamo fatti così

Alcune sostanze chimiche si sono assemblate per dare origine ad un'unica cellula primitiva.

Gli spermatozoi, nella loro corsa verso l'ovulo, devono fronteggiare una lunga serie di ostacoli.

Un'occhiata attraverso il microscopio basta per farci individuare i nemici del nostro organismo.

Visitiamo assieme l'interno del midollo osseo, il fulcro del sistema immunitario.

Nel corpo umano ci sono centomila chilometri di vasi sanguigni.

Il midollo osseo produce ogni giorno quattrocento miliardi di piastrine.

Seguiamo assieme i globuli rossi nella loro migrazione verso la vena cava.

E' negli alveoli polmonari che i globuli rossi cedono il loro carico di anidride carbonica.

Osserviamo assieme la complessa ed affascinante struttura cerebrale.

L'attività all'interno di ogni neurone è particolarmente intensa ed affascinante da osservare.

Entriamo nell'occhio del piccolo Pierre per capire come funziona la vista.

Vediamo come le note si trasformino in onde sonore che il timpano riceve ed elabora.

Osserviamo dall'interno la complessa ed affascinante composizione dell'epidermide.

Osserviamo assieme il lavoro di denti, ghiandole salivari e papille gustative.

Dopo aver giocato, Pierrot e l'amico Petit Gros divorano affamati la cena preparata dalla mamma.

Integrati nel flusso sanguigno, i prodotti della digestione si dirigono verso il fegato.

Globus, the old red corpuscle, and his friends find themselves working in a less comfortable part of the body today. They are at the access roads for the liver and the kidneys. That's where a lot of waste is found as well.

Quite an unknown organ, this lymphatic system with all the branches and nodes and the liquid. This time, our friends, the red corpuscles, don't accompany us, because they don't belong here. But Young Peter and his friends undergo another adventure on their trip through this system, whose task it is to transport nutrition in the body.

How come small kids get hurt so much less when they fall than old people do? What's the difference between a young and an old bone, considering flexibility and fragility? These and some other questions are dealt with in today's episode.

The muscles constitute about a half of our total body weight. Not only do they appear in our arms, legs and in our breast, but also the heart is a muscle, as well as the walls of our arteries, which consist of muscle texture. Muscles must carry out work and therefore they need energy, which means sugar and fat.

Today, Peter and his friends are meeting for an endurance run in the park. Athletes, that run very much, need to breathe a lot as well, so that enough oxygen is provided for the body. However, when we breathe, it's not only oxygen that enters the body, but also dust particles, exhaust gas, and some other more or less toxic substances.

Peter and Jumbo are doing the gardening today. They are busy with moving a rosebush. Naturally, they both sting their hands at the thorns and get wounded. After that, they touch the soil that they dug out. That's a celebration for the malicious germs. They take their chance and invade the body.

Peter and his friend Jumbo are playing tennis. The Master is observing the match from his monitor in the hypothalamus and is giving some instructions. Especially the hormones are sent on their way over and over again with the responsibility of adapting the breathing, the heartbeat and glucose resources to the respective situation.

Peter is going for a walk with his grandfather. Meanwhile, the latter explains to Peter that the sun is the source of all life and that if it wasn't for the sun, our planet earth would be a cold and boring planet and there would be no life. That's because the sun makes everything grow, as for example grains and fruits and trees, which then produce the oxygen that is vital for us to breathe.