Which of the following most directly prevents dehydration?
A. Urea
B. Juxtaglomerular cells
C. Macula densa cells
D. ADH
E. Parasympathetic innervation of the kidney
Answer: D
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In the normal adult, there are ________ distinct curvatures to the vertebral column.
Fill in the blank(s) with the appropriate word(s).
In the autonomic nervous system two neurons are used outside of the CNS, whereas in the somatic nervous system ________ neuron(s) are used outside of the CNS.
A) four B) one C) ten D) three E) zero
Simply put, antibodies are molecules on the lookout for antigens
Indicate whether this statement is true or false.
Projections of loose connective tissue from the dermis, which extend upward between the adjacent ridges of the epidermis, are called
A) epidermal ridges. B) strata. C) reticular layers. D) accessory structures. E) dermal papillae.