OBSintermediate
Match each cardinal movement of labor with its correct physiological event: Cardinal Movements: 1. Engagement 2. Descent 3. Extension 4. Restitution Events: A. Widest presenting diameter passes through the pelvic inlet B. Downward progress of the presenting part through the birth canal C. Fetal head pivots beneath the symphysis pubis to deliver D. Head rotates 45 degrees externally to realign with the shoulders
Answer
1 - A, 2 - B, 3 - C, 4 - D
Explanation
Each term refers to a specific adaptation. Engagement describes passage below the inlet; descent is downward movement; extension delivers the head beneath the symphysis pubis; and restitution realigns the head with the shoulders. **Key takeaway:** Distinguish downward movement, pelvic entry, and rotational realignment.\n\n**Glossary:** **Symphysis pubis**: the joint at the front of the pelvis.
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