External Anatomy (Saiswan,Ronjae)

1. 59 days away from fertilization.
2. The skin regulates body temperture, protect the body from radiation, and excreats toxic substances through sweat.
3. Inhaled air needs to be warm, filtered and moist becasue cold air lowers the body temperature, dry air can dry out the lungs and dirty air can cause infections or diseases.
4. Materials pass back and forth between the fetus and the mother by using the umbilical cord.
5. The hard palate is used to prtect the mouth.
6. Our pig was supposed to be born. It was 40cm. We determined the age by measuring the length of the pig.