Fetal Period: Development Summary 9-12 Weeks

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During which week of development does the heart become four-chambered?

Fifth week

Sixth week (correct)

Seventh week

Fourth week

What is the primary focus during the fetal period?

Growth and differentiation of existing tissues and organs (correct)

Development of new structures

Formation of the heart prominence

Rapid brain development

During which period is the fetus least vulnerable to the damaging effects of drugs, radiation, and microbes?

Embryonic period

Fetal period (correct)

Both periods pose equal vulnerability

The vulnerability varies throughout both periods

What is the approximate proportion of the full-term weight gained during the last 2.5 months of intrauterine life?

One-half Signup and view all the answers

During which week does the rapid development of the brain occur, leading to considerable growth of the head?

Fifth week Signup and view all the answers

What is the approximate proportion of body length occupied by the head at the beginning of the fetal period?

One-half Signup and view all the answers

During which period do the limbs show substantial development?

Sixth week Signup and view all the answers

What is the approximate proportion of fetal length occupied by the limbs at the end of the fetal period?

One-half Signup and view all the answers

During which period does the neck and trunk begin to straighten?

Sixth week Signup and view all the answers

What distinguishes the fetal period from the embryonic period in terms of development?

Remarkable body growth Signup and view all the answers

Fetal Period: Development Summary 9-12 Weeks

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Questions and Answers

During which week of development does the heart become four-chambered?

What is the primary focus during the fetal period?

During which period is the fetus least vulnerable to the damaging effects of drugs, radiation, and microbes?

What is the approximate proportion of the full-term weight gained during the last 2.5 months of intrauterine life?

During which week does the rapid development of the brain occur, leading to considerable growth of the head?

What is the approximate proportion of body length occupied by the head at the beginning of the fetal period?

During which period do the limbs show substantial development?

What is the approximate proportion of fetal length occupied by the limbs at the end of the fetal period?

During which period does the neck and trunk begin to straighten?

What distinguishes the fetal period from the embryonic period in terms of development?

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