High progesterone levels during the luteal phase ________.
A. suppresses FSH and LH
B. causes thickening of the endometrium
C. causes cervical mucus to thicken
D. All of the choices are correct.
Answer: D
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List and briefly describe the major functions of blood
What will be an ideal response
The __________ performs the work of the heart.
A. fibrous skeleton B. pericardial cavity C. endocardium D. myocardium E. epicardium
The kidneys play a major role in the regulation of which of the following? select all that apply.
a) electrolytes b) cholesterol levels c) acid-base balance d) body temperature
Close examination of an organ reveals a lining of several layers of cells. The layers do not contain any blood vessels and one surface of the cells is open to the internal cavity of the organ. This tissue is probably
A) epithelium. B) muscle tissue. C) connective tissue. D) neural tissue. E) fat tissue.