Peptide hormones do not enter their target cells, but bind to receptors in the plasma membrane.

a. true
b. false


Ans: a. true

Anatomy & Physiology

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All receptors for __________ are confined to the head and are innervated by cranial nerves.

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A) -3 B) -6 C) +6 D) 0 E) +3

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The type of muscle fibers that have only a single nucleus, both thick and thin filaments, but no Z discs, are

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