Down syndrome ultrasound

Vee
Having my Down syndrome ultrasound this Thursday. I'll be 13 weeks and 3 days. I'm having it kinda late because I was sick and missed my appt. Anyways I was just wondering, do they only check the neck or will they be checking the entire baby and maybe show me the sex or print me some extras?? :D sorry I'm excited lol I don't remember with my other children's pregnancies how this went..