Select the correct statement about the uterine cycle.
A) The menstrual phase of the cycle is from day 1 to day 8.
B) During the secretory phase, estrogen levels are at their highest.
C) During the proliferative phase, levels of progesterone rise as the follicle begins to produce more hormone.
D) If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo.
D) If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo.
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Kyphosis is an excess curvature in the thoracic part of the vertebral column.
Answer the following statement true (T) or false (F)
Factors that are necessary for proper bone formation include all of the following, except
A) vitamin A. B) vitamin E. C) vitamin C. D) the hormone thyroxine. E) vitamin D.
Epinephrine and norepinephrine are secreted by the
A) Adrenal cortex. B) Chromaffin cells. C) Heart. D) Kidneys.
This figure shows the muscles of facial expression. What muscle does number 9 indicate?
A. Sternocleidomastoid B. Levator labii superioris C. Mentalis D. Risorius E. Depressor labii inferioris