When an 8-year-old asks the nurse how shots kept her from getting whooping cough, the nurse explains that the shots:
a. Were borrowed antibodies from another person who had whooping cough
b. Gave her a tiny case of whooping cough and then she made her own antibodies
c. Strengthened the antibodies she was born with
d. Are only temporary borrowed antibodies, and she needs to have another shot every 5 years
Question 2
In fetal development, the _________ is open to allow blood to flow in the heart.
1. Patent ductus arteriosus
2. Pulmonic valve
3. Aortic valve
4. Bicuspid valve