VD - 13/02/2011

The stomach is one of the oldest and known stable. The need to nurture is one of the most primitive and hence almost every kind of animal has had a body for that purpose. However if we look at the different types of stomachs to which we are able to...

VD - 13/01/2011

Myocardial is an organ composed by involuntary striated muscle cells. It is a myogenic muscle, it means self-excited. This characteristic means that it’s started its development at the same time or before the central nervous system therefore its...

VD - 2/12/2010

Approximately 1000 millions of years ago (between 1.800 and 625 millions) appeared in the Earth the first eukaryotic and protist. These unicellular beings lived in the sea and need to react in front of the environmental changes as a mechanism to...

VD - 4/11/2010

A fundamental biochemical advance in life development is the appearance of molecules which allow the gaseous exchange between the exterior and the interior of cells.

VD - 11/10/2010

Alcoveria brevis corresponds to a fossil of osseous fish, from the group of sarcopterygians, characterised for their lobulated fins, which can be found in the mountains of Alcover (Tarragona) in Southern Europe. The importance of this fossil lies in two...

VD - 23/09/2010

Its appearance is very different to vertebrates. However its genome is inked to them. Ciona intestinalis is a marine animal tunicated and urochordated from the class Ascidiacea which during its embryonic phase present a structure very similar to the...