Which of the following is NOT true concerning oxytocin?
A. Oxytocin produces milk let-down during nursing.
B. Oxytocin release in childbirth is controlled by positive feedback.
C. Oxytocin increases uterine contractions during childbirth.
D. Oxytocin is a steroid hormone.
Answer: D
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When blood glucose levels rise, the pancreatic islets are stimulated to release insulin, which acts on target cells to uptake glucose from the blood. Thus, the islets serve as the ________ in the feedback loop.
effectors integrating center sensors All of the choices are correct.
The smallest short bone in the hand is the ________.
Fill in the blank(s) with the appropriate word(s).
________ nerves are composed of preganglionic sympathetic axons that did not synapse in a sympathetic ganglion.
Fill in the blank(s) with the appropriate word(s).
What is the function of Paneth cells of the small intestine?
A. Produce mucus B. Produce lysozyme and defensins C. Produce digestive enzymes D. Divide by mitosis to make new mucosa cells