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Embryogenesis and Fetal Morphological Development

A patient reports that the first day of her last menstrual period was September 19th. Based on Naegele rule, her due date is which of the following?

a. July 10th

b. June 14th

c. June 26th

d. December 12th

Pregnancy can be divided into three units or trimesters each lasting how many weeks?

a. 12

b. 13

c. 15

d. 16

At the beginning of which week following fertilization is a conceptus termed an embryo?

a. 1st week

b. 2nd week

c. 3rd week

d. 4th week

How many weeks does the embryonic period last?

a. 4

b. 8

c. 10

d. 12

During which week of development is the primitive heart partitioned?

a. 4th week

b. 6th week

c. 8th week

d. 10th week

At 10 weeks’ gestation based on the last menstrual period, all EXCEPT which of the following are true?

a. Arms bend at the elbows.

b. Crown-rump length is 7 cm.

c. The upper lip is complete.

d. Heart is completely formed.

Corresponding with midbrain maturation, when do eye movements begin?

a. 10–12 weeks

b. 12–14 weeks

c. 14–16 weeks

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