During the late follicular phase, ______ provides positive feedback for the release of tropic hormones from hypothalamus and anterior pituitary gland.
a. GnRH
b. hCG
c. progesterone
d. estrogen
Answer: d. estrogen
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With advancing age, the lymphatic system
A. produces an increasing number and variety of B-lymphocytes. B. becomes less efficient at absorbing dietary lipids. C. is less responsive to antigens. D. ceases to transport lymph. E. All of the choices are correct.
Identify the indicated blood vessel
What will be an ideal response?
Which of the following events during cell division creates genetic variation amongst the gametes? (Check all that apply.)
A. Genetic exchange between chromatids of replicated chromosomes B. Crossing over C. Random assortment of chromosomes along the equatorial plane D. Genetic exchange between chromatids of homologous chromosomes
The repeated units of compact bone are called:
a. osteons b. lacunae c. trabeculae d. canaliculi