Embryology

7.

The Fetal Period

7.1.

General Characteristics

7.1.1.

Rapid Body Growth

7.1.2.

Maturation of Tissues and Organs

7.1.3.

Changes in Body Proportions

7.2.

Viability of the Fetus

7.2.1.

Definition and Criteria

7.2.2.

Factors Affecting Viability

7.3.

Milestones of Fetal Development by Trimester

7.3.1.

First Trimester

7.3.2.

Second Trimester

7.3.3.

Third Trimester

7.4.

Fetal Physiology

7.4.1.

Fetal Circulation

7.4.1.1.

7.4.1.2.

7.4.1.3.

Ductus Arteriosus

7.4.2.

Fetal Respiration and Surfactant Production

7.4.3.

Fetal Metabolism

7.4.4.

Hematopoiesis in the Fetus

7.4.5.

Endocrine Function

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6. Fourth to Eighth Week

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8. Fetal Membranes and Placenta