Hannah eats tremendous amounts of food, but then takes laxatives, vomits, and exercises to keep from gaining weight. She has an eating disorder called ________.
Fill in the blank(s) with the appropriate word(s).
bulimia
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Rebecca's younger sister just told her that she has begun menopause. Rebecca wonders if she has begun menopause as well. One of the symptoms to watch out for is
A. the cessation of menstrual cycles. B. the pause in development of ovarian follicles occurring between the birth of a baby girl and when she reaches puberty. C. high plasma levels of estrogens. D. cessation of gonadotropin secretion. E. the cessation of ovulation while a baby is nursing.
An experimental treatment cultures stem cells from a newborn's umbilical cord. In a lab dish, the stem cells give rise to type II cells, which in turn give rise to more type I cells. These stem cells will be added to the extracellular matrix of a donated lung which has been stripped of its respiratory cells. How will the cells act after they grow in the donated lung?
A. The stem cells will directly replace alveoli. B. The type II cells will secrete surfactant and the type I cells will form the respiratory membrane in the alveoli. C. Both type I and type II cells will produce surfactant. D. The type I cells will secrete surfactant and the type II cells will form the respiratory membrane in the alveoli.
Which tunic of an artery contains epithelium?
A) tunica externa B) tunica media C) tunica intima D) None of the listed responses is correct.
The Hering-Breuer reflex is:
A. an inspiratory inhibitory reflex B. stimulated by lung deflation C. mediated by the phrenic nerve D. activated by low PO2