Which of the following is NOT true of oxytocin?
A. It is produced in the thyroid gland.
B. It increases the intensity of uterine contractions during labor.
C. It is one of the few hormones that is regulated by a positive feedback loop.
D. It stimulates milk ejection in nursing mothers.
Answer: A
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Bronchioles are kept open by
A. plates of cartilage. B. smooth muscle. C. rings of cartilage. D. skeletal muscle. E. layers of epithelium.
Drugs that decrease membrane permeability to sodium
A. increase pain. B. lessen pain. C. make pain-signalling neurons more excitable D. increase the amount of nerve impulses to/through an affected area.
The ________ layer of the dermis contains bundles of collagen fibers and elastin, and is responsible for the mechanical strength and flexibility of the skin.
A) germinative B) reticular C) subcutaneous D) papillary E) corneal
The muscles that move the thigh that originate on the vertebral column are
A) medial rotators of the thigh. B) flexors of the thigh. C) iliopsoas group of the thigh. D) adductors of the thigh. E) abductors of the thigh