Search results for “accidente vasculare cerebrale”

Mauvein: The Invention of the First Synthetic Dye

In the mid-19th century, chemical assistant Henry Perkin was looking for an synthetic substitute for an antimalarial drug. But instead of quinine, he produces the first synthetic dye: mauveine. An accidental product! Authors: ZDF/Terra X/T. Schrader/J. Koester/F. Steinhardt/Moods in Pictures/Maximi

Structure and function of a giraffe neck

A giraffe's neck is up to 2.50 meters long, weighs around 250 kilograms and is held in place by only one tendon and seven cervical vertebras. It is a particular challenge to the vascular system when the giraffe bends its head down to drink. Author: ZDF/Terra X/R.Marel/C.Gerisch/SpiegelTV/Jochen Sch

The function of the heart

The heart is the engine of the blood circulation. It supplies every cell in our body with oxygen and nutrients and removes end products of metabolism. The heart pumps approximately 8,000 to 10,000 liters of blood through the body per day. Author: ZDF/3sat/nano/Südkino F i l m p r o d u c t i o n Gm

This is how respiration works

Every human being breathes in and out continuously. We suck air through the trachea into the lungs via the nose or mouth. Through vascular walls, oxygen can be absorbed into the blood and flows into the circulation with every heartbeat. Author: ZDF/scobel/xkopp/Daniel Sich/Maximilian Mohr Translat

NOVA scienceNOW: T. Rex Blood?

In this video segment adapted from NOVA scienceNOW, learn how scientists are hoping to better understand the biology of dinosaurs by studying the insides of fossil bones. Hear about the accidental discovery of dinosaur soft tissue by paleontologist Dr. Mary Schweitzer, and how this tissue enables sc

Swift: Gamma-Ray Bursts

In the late 1960s, scientists accidentally discovered gamma-ray bursts — intense flashes of energy that typically last no more than a few minutes and are often as short as a fraction of a second. For decades after the discovery of these powerful bursts, they remained one of the greatest mysteries in