Elevated levels of calcium ion in the blood stimulate the secretion of the hormone
A) parathyroid hormone.
B) calcitonin.
C) testosterone.
D) growth hormone.
E) thyroid hormone.
B) calcitonin.
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Vaccines are effective because they
A. immediately stimulate cellular immunity to eliminate all of the pathogen in the body. B. inhibit antibodies from having secondary responses. C. stimulate the development of immunologic memory. D. increase the number of natural killer cells while decreasing the numbers of T and B cells.
Nicole and Camille are synchronized swimmers for their college swim team. They often work long hours to ensure the movements in their routine are perfectly timed. What part of their brains must Camille and Nicole rely on most?
a. medulla b. pons c. reticular formation d. cerebellum
The ducts that deliver bile and pancreatic juice from the liver and pancreas, respectively, unite to form the ________.
A) portal vein B) pancreatic acini C) bile canaliculus D) hepatopancreatic ampulla
Genetic males have both an X and a Y sex chromosome; genetic females have two X sex chromosomes
Indicate whether the statement is true or false