S2 Technique de communication et d'expression en langue anglaise 2

S2 Informatique 2

S2 Economie rurale

S2 Agriculture appliquée 1

S2 Climatologie

S2 Mathématiques 2

S2 Physique 2

S2 Chimie 2

S2 Biologie végétale 2

S2 Biologie animale2 (histologie)

1.      Embryo begins as a single cell

– divides into many cells that form layers (strata)

2.      Three primary germ layers

A.  ectoderm (outer) gives rise to: epidermis + nervous system

B.  endoderm (inner): mucous membranes: GI tract and respiratory linings; digestive glands.

 

C.  mesoderm (middle) forms mesenchyme (gelatinuous tissue) and then give rise to muscle, bone, and blood