NR 507 Week 4 Midterm fall 2020 The coronary ostia are located in the: (Points : 2) Left ventricle Aortic valve Coronary sinus Aorta Where in the respiratory tract do the majority of foreign objects aspirated by children finally lodge? (Points : 2) Trachea Left lung Bronchus Bronchioles Which type of antibody is involved in type I hypersensitivity reaction? (Points : 2) IgA IgE ...