The nurse is caring for a pregnant patient. What hormone must be secreted to cause uterine contractions?
A) Oxytocin
B) ADHD
C) Estrogen
D) Enkephalins
A
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The pituitary is made up of three lobes: anterior, intermediate, and posterior. The posterior lobe stores two hormones produced by the hypothalamus, ADH and oxytocin. Oxytocin stimulates uterine smooth muscle contraction in late phases of pregnancy and also causes milk release or "let down" reflex in lactating women. The posterior lobe does not store estrogen or enkephalins. ADHD (i.e., attention deficit hyperactivity disorder is a disease process, not a hormone.
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