Question

What are some theories about the initiation of labor? Select all that apply.

A. An increase in pituitary output of oxytocin.
B. Increased synthesis of prostaglandin.
C. An increase in uterine sensitivity to oxytocin.
D. An increase in uterine sensitivity to prostaglandin.
E. An increase in cervical sensitivity to oxytocin.
F. Decrease in progesterone.

Answer 1

The theories about the initiation of labor include an increase in pituitary output of oxytocin, increased synthesis of prostaglandin, an increase in uterine sensitivity to oxytocin, an increase in uterine sensitivity to prostaglandin, an increase in cervical sensitivity to oxytocin, and a decrease in progesterone.

Step-by-step explanation:

There are several theories about the initiation of labor:

1. An increase in pituitary output of oxytocin.
2. Increased synthesis of prostaglandin.
3. An increase in uterine sensitivity to oxytocin.
4. An increase in uterine sensitivity to prostaglandin.
5. An increase in cervical sensitivity to oxytocin.
6. Decrease in progesterone.

During labor, the hormone oxytocin stimulates the contractions of the uterine wall, and prostaglandins enhance uterine contractile strength. The myometrium and cervix also increase their sensitivity to oxytocin and prostaglandins, further promoting labor. These theories provide insight into the multifaceted process of labor initiation and highlight the role of hormonal and physiological changes.