From which germ layer does the nervous system form?
A. endoderm
B. mesoderm
C. exoderm
D. ectoderm
D
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Exercise walking can have which of the following effects?
A. improved balance in older adults B. decreased likelihood of falls in older adults C. decreased risk of osteoporosis for women D. all of the above
The release of FSH and LH from gonadotropes in the adenohypophysis is separately controlled by the same hypothalamic releasing hormone, GnRH. How is it possible to organize their secretion during the menstrual cycle?
Upregulation of a target cell can occur in response to
A. prolonged decrease in the level of a hormone. B. prolonged increase in the level of a hormone. C. signals from the posterior pituitary. D. signals from antagonistic hormone products.
T lymphocytes mature primarily in the thymus
Indicate whether the statement is true or false.