What hormone is the primary antagonist of glucagon?
A) cortisol B) thyroid hormone C) insulin D) growth hormone
Answer: C
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Exposure to UV radiation can cause changes in DNA and can therefore be considered a mutagen.
Answer the following statement true (T) or false (F)
Descending branches of the vagus and splanchnic nerves travel through the ________ plexus
A) cardiac B) pulmonary C) hypogastric D) esophageal E) celiac
Which of the following statements correctly compares water-soluble hormones with lipid-soluble hormones?
a) Both types of hormone are carried in the blood attached to a carrier protein. b) Both types of hormone almost always stimulate increases in mRNA transcription. c) Only water-soluble hormones use second messengers. d) Only water-soluble hormones require a receptor. e) Lipid-soluble hormones are not found in the bloodstream.
The term "nerve fiber" refers to a(n) __________.
A. nerve cell B. organelle in nerve cells C. organ D. axon E. bundle of macromolecules in nerve cells