Deck 8: Prenatal Development

Question 1

Which of the following organ systems is functional by the end of the 4th embryonic week?

A) Cardiovascular
B) Respiratory
C) Musculoskeletal
D) Urogenital

Answer 1

A

Question 2

Which of the following sensory systems is LEAST developed in the fetus?

A) Touch
B) Vision
C) Vestibular
D) Hearing

Answer 2

B

Question 3

An embryo is MOST susceptible to teratogens affecting the developing limbs during the ________________ weeks:

A) 1st to 2nd
B) 9th to 12th
C) 4th to 7th
D) None of these

Answer 3

C

Question 4

The embryonic period is characterized by all of the following statements EXCEPT:

A) It lasts from the end of germinal stage through 8 weeks.
B) It is a period of major susceptibility to teratogens.
C) It represents the period before placental circulation is established.
D) It is the period when most body structures form and early functions begin.

Question 5

The minimal age of fetal viability is:

A) 8 to 10 weeks
B) 22 to 24 weeks
C) 32 to 34 weeks
D) 38 to 42 weeks

Question 6

The neural tube forms from:

A) Neurectoderm
B) Mesoderm
C) Neuroendoderm
D) Notochord

Question 7

The neural tube completes closure in which week after conception?

A) 2nd
B) 4th
C) 8th
D) 12th

Question 8

Which of the following is true about gestational age dating of the pregnancy?

A) It is an exact date by Carnegie classification.
B) It is 2 weeks older than the embryo actually is from conception.
C) It is 2 weeks younger than the embryo actually is from conception.
D) It is equivalent to the embryonic age from time of conception.

Question 9

Which of the following structures is the immediate precursor to the fetal membranes and placenta?

A) Inner cell mass
B) Epiblast
C) Trophoblast
D) Morula

Question 10

Which of the following tissues does NOT develop from mesoderm?

A) Spinal cord
B) Muscle
C) Heart
D) Bone