Which hormone stimulates uterine contractions and the milk ...

[tsand2]

Which hormone stimulates uterine contractions and the milk ejection reflex in breastfeeding?
 
  a. Progesterone
  b. Estrogen
  c. Oxytocin
  d. Testosterone

Question 2

One cause of frequent urination during pregnancy is:
 
  a. More rapid flow of urine to the bladder
  b. Pressure of the gravid uterus on the bladder
  c. Stasis of urine in the ureters
  d. Decreased renal blood flow

[Kjones0604]

Answer to Question 1

ANS: C
Oxytocin, a posterior pituitary hormone, contracts the uterus before and after delivery and causes milk ejection during breastfeeding.

Answer to Question 2

ANS: B
During early pregnancy, the growing uterus puts pressure on the bladder, causing frequent urination. In late pregnancy, the uterus with the growing fetus settles into the pelvic cavity, again putting pressure on the bladder. Urine flows to the bladder more slowly (not more rapidly). Stasis of urine in the ureters occurs but would not cause frequency. Renal blood flow increases, rather than decreases.

[tsand2]

Correct answers!

[Kjones0604]

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