Which of the following statements regarding endocrine regulation of breast function in females is FALSE?
A. During pregnancy, the main source of plasma prolactin is secretion from the maternal anterior pituitary gland.
B. During puberty, ductal growth is stimulated by increasing estrogen levels in plasma.
C. Breast development fluctuates with changing blood concentrations of estrogen and progesterone during each menstrual cycle.
D. During puberty, progesterone stimulates the growth of breast alveoli.
E. Prolactin is the main hormone mediating the milk ejection reflex.
Answer: E
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Distinguish between these statements, explaining what is correct or incorrect about each, and what requires clarification. Relate your answers to the energy hill concept from the previous chapter.
A. Passive transport requires energy. B. Active transport requires energy. C. Vesicular transport requires energy.
Which one of the following is NOT a substance typically reabsorbed by the tubules under normal healthy conditions?
A) glucose B) urea C) amino acids D) sodium E) water
What are ciliated CNS neuroglia that play an active role in moving the cerebrospinal fluid called?
A) ependymal cells B) Schwann cells C) oligodendrocytes D) astrocytes
Which is not true of blood pressure:
a. its maximal during ventricular systole. b. it decreases the farther away from the heart. c. it increases with increasing resistance. d. it decreases with increasing vessel diameter. e. it can be increased by direct parasympathetic activity.