Which of the following occurs during the proliferative phase of the menstrual cycle?
A) The oocyte completes meiosis II
B) The corpus luteum is shrinking
C) Oogonia are transforming into primary oocytes
D) The corpus luteum is enlarging
E) Several follicles are developing an antrum
E
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The corpus luteum
a. develops from the polar body after ovulation b. develops from the fertilized ovum through a process of division and differentiation c. develops from the ruptured follicle after ovulation d. of pregnancy is stimulated by estrogen and progesterone secretion from the placenta e. is sloughed off during menstruation if fertilization does not occur
Unbroken skin and cellular secretions, such as mucus, are examples of _____ immunity.?
A) ?natural B) ?passive acquired C) ?natural acquired D) ?artificial acquired
Which of the abdominal wall muscles help(s) flex the vertebral column?
A. Transversus abdominis B. Rectus abdominis C. Internal oblique D. External oblique E. All of these abdominal wall muscles help flex the vertebral column.
Hyperventilation produces which of these effects?
A) decreased blood PCO2 B) vasodilation of peripheral blood vessels C) decreased blood pressure D) increase in pH E) all of these