intercellular communication through chemical signals

1- Introduction : Intercellular communication is one of the features of multicellular organisms, provided by chemical molecules (informative or messengers molecules) issued by a ...

Methods & rsquo; cell study

Introduction : The cell is the basic structural unit and functional living organisms and because of its small size, cell biology. all...

Elbow joint

  I- Introduction : The elbow joint unit forearm arm, it allows to wear the food to the mouth, is a diarthrosis (highly mobile) that united ...

Cytosquelette

The three main fibers of the cytoskeleton are microfilaments, microtubules and intermediate filaments. Ces fibres interagissent pour moduler la forme et permettre...

Introduction to Histology

1 - GENERALITES : In the history of medicine and biology, the concept of tissue preceded that cell. The first, of...

Descriptive study of Oses d & rsquo; biological interest and their derivatives

1) D-Glucopyranose : Se glucose naturel (D (+) glucose) is widespread in nature. This is the main fuel of the body and fuel ...

genital apparatus

I- L' MALE REPRODUCTIVE SYSTEM : Also called & quot; male reproductive system & quot;, it includes all the bodies involved in the reproductive function. He completed ...

Ovogenèse

La formation des gamètes dans le sexe féminin s'appelle l’ovogenèse. It takes place in the ovaries and brings together all the modifications that allow training..

Glycosaminoglycanes

Definition : These are heterogeneous polysaccharides resulting from the polycondensation under disaccharide units (or disaccharide) Elementary consists of : -a carrier hexosamine molecule..

fabric Cartilaginous

The cartilage tissue is an original supporting tissue mesenchymal, consists of cells, fibers and ground substance. The cartilage matrix is ​​solid ...