Name the functions of the amniotic fluid (7).

1. shock-absorber and pressure equalizer 2. allows embryonal/fetal movement and changes in shape nd size to occur unhindered 3. protects the embryo/fetus against dehydration 4. prevents the development of adhesions between the embryo/fetus and the surrounding tissues 5. allows a limited uptake of fetal excreta 6. serves as a lubricant for the birth canal during parturition. 7. The intact amniotic sac serves as a hydraulic dilator of the birth canal during parturition in most species.