During the secretory phase, the corpus luteum secretes ____ levels of estrogen and ____ levels of progesterone
a. high, high
b. high, low
c. low, high
d. low, low
A
You might also like to view...
Which of the following contains collagen and yellow elastic fibers?
a. epidermis b. dermis
Toll-like receptors (TLRs) trigger the release of ________ to attract white blood cells to the scene.
A) cytokines B) histamine C) prostaglandins D) complement
The erythrocyte (red blood cell) count increases after a while when an individual goes from a low to a high altitude because the ________
A) basal metabolic rate is higher at high altitudes B) concentration of oxygen and/or total atmospheric pressure is lower at high altitudes C) concentration of oxygen and/or total atmospheric pressure is higher at higher altitudes D) temperature is lower at higher altitudes
Digestion is completed
a. in the stomach b. in the small intestine lumen c. on the brush borders of the small intestine epithelial cells d. in the colon e. in the rectum