Which of the following is involved in autoregulation of the GFR?
a. A myogenic mechanism in which the afferent arteriole automatically constricts when it is stretched
b. A tubuloglomerular feedback mechanism in which vasoactive chemicals released from the juxtaglomerular apparatus bring about afferent arteriolar vasoconstriction
c. Sympathetically induced vasoconstriction of the afferent arterioles
d. Both a and b
e. None of the above
D
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The ________ ligament anchors a tooth in the alveolus of the jaw.
Fill in the blank(s) with the appropriate word(s).
Match the vitamin with its associated disease.A. ScurvyB. Night blindnessC. BeriberiD. PellagraE. Pernicious anemiaThiamin
Fill in the blank(s) with the appropriate word(s).
Skin color is determined by the degree of oxygenation of the blood and the relative amounts of these two pigments
A) hemoglobin and melanin B) carotene and hemoglobin C) melanin and carotene D) keratin and melanin
The atomic number of an element refers to the number of particles in its atomic nucleus
Indicate whether the statement is true or false.