Answer to Question 1
1, 2, 3, 5
Explanation: 1. During prolonged labor, the muscles relax because of prolonged time of contraction during labor.
2. During a difficult birth, the uterus is manipulated excessively, causing fatigue.
3. As the uterus is pushed up and usually to the right, pressure on a full bladder interferes with effective uterine contraction.
5. Inflammation and infection interfere with uterine muscle's ability to contract effectively.
Answer to Question 2
E