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Embryogenesis and Fetal Morphological Development

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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?

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a. July 10th

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b. June 14th

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c. June 26th

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d. December 12th

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

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a. 12

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b. 13

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c. 15

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d. 16

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

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a. 1st week

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b. 2nd week

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c. 3rd week

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d. 4th week

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How many weeks does the embryonic period last?

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a. 4

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b. 8

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c. 10

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d. 12

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During which week of development is the primitive heart partitioned?

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a. 4th week

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b. 6th week

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c. 8th week

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d. 10th week

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

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a. Arms bend at the elbows.

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b. Crown-rump length is 7 cm.

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c. The upper lip is complete.

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d. Heart is completely formed.

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Corresponding with midbrain maturation, when do eye movements begin?

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a. 10–12 weeks

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b. 12–14 weeks

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c. 14–16 weeks

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