science 6º
martes, 23 de noviembre de 2010
THE ENDOCRINE SYSTEM
The endocrine system is responsible for functions such as growth and reproduction.
It consists of
endocrine glands
, which secrete substances called
hormones
into the
bloodstream.
No hay comentarios:
Publicar un comentario
Entrada más reciente
Entrada antigua
Inicio
Suscribirse a:
Enviar comentarios (Atom)
No hay comentarios:
Publicar un comentario