Uterine contractions can occur because of the interplay of the contractile enzyme adenosine triphosphate and the influence some hormones.. Prolactin

Uterine contractions can occur because of the interplay of the contractile enzyme adenosine triphosphate and the influence some hormones. Which of the following least likely contributes to the occurrence of uterine contractions?
a. Oxytocin
b. Estrogen
c. Prolactin
d. All of the above

Answer: C.
Prolactin is the hormone that produces milk in mammary glands. Uterine contractions can occur because of the interplay of the contractile enzyme adenosine triphosphate and the influence some hormones and major electrolytes which are the following:
• Calcium
• Sodium
• Potassium
• Specific contractile proteins (actin and myosin)
• Epinephrine and norepinephrine
• Oxytocin
• Estrogen and progesterone
• Prostaglandins.