An average loss of blood during birth is about how many cm3?
Correct answer: C. 350
- A. 250
- B. 300
- C. 350
- D. 400
Explanation
Within 10-45 minutes after birth, the uterus contracts and separate the placenta from the wall of the uterus and placenta then passes out through the vagina. This is called after birth. Bleeding, throughout this period, is controlled by the contraction of smooth muscle fibers which completely surround all uterine blood vessels supplying the placenta. Average loss of blood is about 350 cm3.
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