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La excreción consiste en eliminar de nuestro cuerpo los residuos producidos por la actividad celular. Estos residuos están disueltos en la sangre y son expulsados al exterior por el aparato excretor
células sanguíneas que flotan en un líquido nutritivo llamado plasma sanguíneo.
Glóbulos blancos y rojos
Leucocitos y glóbulos rojos
Question 8
Question
El ventrículo, cuya pared es gruesa y musculosa, ya que tiene que contraerse con gran fuerza para impulsar la sangre. De cada ventrículo sale una vena.
Circulación general o menor y circulación pulmonar
Circulación menor y circulación pulmonar
Circulación general o mayor y circulación pulmonar o menor
Question 10
Question
Es una sustancia que nuestras células necesitan para fabricar sus membranas; por eso es normal que en la sangre haya siempre cierta cantidad disponible.