A phospholipid has two functionally different areas: hydrophilic heads and ________ tails.
Fill in the blank(s) with the appropriate word(s).
hydrophobic
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The fatty tissue surrounding the kidneys is important because it ________
A) produces vitamin D and other chemicals needed by the kidney B) stabilizes the position of the kidneys by holding them in their normal position C) is necessary as a barrier between the adrenal glands and kidneys D) ensures adequate energy for the adrenal glands to operate efficiently
Irritation of the muscles of the posterior aspect of the thigh can also cause irritation of the ________ nerve.
Fill in the blank(s) with the appropriate word(s).
In the renal tubules, where is the Na+/K+ pump located?
A) in both the apical and basolateral membranes of principal cells B) in the basolateral membrane of the proximal tubules C) in both the apical and basolateral membranes of intercalated cells D) in the apical membrane of the collecting ducts E) in the apical membrane of the descending limb of the loop of Henle
Which of the following is NOT an accessory structure in the integumentary system?
A) exocrine glands and hair follicles B) endocrine glands C) nails and exocrine glands D) hair follicles and nails