Clicker Questions: Exam 2

Question 0

In the mature placenta which fetal tissue directly interfaces with the maternal uterine connective tissue?

Answer 0

Cytotrophoblast

Question 1

An increased incidence of what condition is strongly associated with increasing maternal age?

Answer 1

Trisomy 21

Question 2

Cleft palate is the rsult of a defect in what developmental mechanism?

Answer 2

Failure to fuse

Question 3

Which condition is related to paternal imprinting?

Answer 3

Hyatidiform mole

Question 4

Phocomelia is most likely to be seen after maternal exposure to which teratogenic agent during the first trimester of pregnancy?

Answer 4

Thalidomide

Question 5

Blood vessels associated with which structure enter the fetal component of the placenta?

Answer 5

Allantois

Question 6

What type of cell invades the maternal spiral arteries and reduces the blood flow from their open ends?

Answer 6

Cytotrophoblast

Question 7

Which condition of the extraembryonic membranes can be found in uteri containing identical twins?

Answer 7

All of the above

Question 8

Folic acid deficiency is now believed to be a major cause of waht class of malformation/

Answer 8

Neural tube defects

Question 9

A 28-year-old Rh-negative woman’s second son is born severely jaundiced. Which characteristic most likely describes her first child?

Answer 9

Rh positive

Question 10

What embryonic hormone has serves as the basis for many standard pregnancy tests?

Answer 10

HCG

Question 11

Which of these anomalies can be attributed to a disturbance in tissue resorption?

Answer 11

Anal atresia