The principal cation in the ICF is
A) sodium.
B) potassium.
C) calcium.
D) magnesium.
E) chloride.
B) potassium.
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Adjacent to the lumen, the innermost tissue layer of the GI tract is the __________.
Fill in the blank(s) with the appropriate word(s).
Muscles of the head and neck that are innervated by the facial nerve are associated with
A) actions that form facial expressions. B) those that govern verbal communication. C) those that govern feeding. D) actions that orient the eyes. E) None of the answers are correct.
Which of the following IS NOT an enzyme involved in scavenging reactive oxygen species?
a. superoxide dismutase. b. catalase. c. glutathione peroxidase. d. ascorbate.
The autonomic system has both sympathetic and _______ divisions.
A) motor B) sensory C) parasympathetic D) voluntary