Anatomy tests

Sabrina • I'm 24 years old I have an amazing fiance that i wouldnt kno what to do without. Then i have a 4 year old daughter she's is the best ever with her temper haha. And I'm due Feb 6th 16 with my son :)
Ok lady's this is my second baby but 4 years later I can't remember what the anatomy testing was.. can anyone tell me what I'm going to look forward to