The hormone that stimulates calcium deposition into bone is
A) insulin. B) calcitonin.
C) thyroxine. D) parathyroid hormone.
B
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Living cells cannot be viewed under an electron microscope.
Answer the following statement true (T) or false (F)
Each IgG has ________ binding sites for attachment to antigenic determinants
A) 1 B) 2 C) 4 D) up to 8 E) as many as a 1000
Sponges do not have a true circulatory system, but they can propel water through their bodies using flagellated __________
Fill in the blank with the correct word.
Complicated interlacing of the ventral rami form networks called nerve plexus. The crisscrossing of the nerve fibers from the various spinal nerves is advantageous because ________
A) injury to any single spinal nerve will be less damaging as there is less chance of total loss of innervation to any particular organ B) having several nerve fibers unite enhances sensory function C) viruses that infect us by moving through PNS nerves are prevented entry to the CNS D) having several nerve fibers unite enhances motor function