What is the definition of a prohormone?

A. Hormones that bind to endocrine glands and stimulate the secretion of a second hormone.
B. Hormones that bind to endocrine glands and inhibit the secretion of a second hormone.
C. A longer protein or peptide that is cleaved into shorter ones, at least one of which is a peptide or protein hormone.
D. Hormones that stimulate the expression of receptors for a second hormone, promoting their action.
E. Steroid hormones that are inactivated by having hydroxyl groups removed from their structure.


C

Anatomy & Physiology

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Thrombopoietin is produced in the

A) liver only. B) bone marrow only. C) kidney only. D) liver and kidney. E) spleen only.

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Compounds classified as __ after synaptic transmission by changing neurotransmitter receptor numbers or affecting the breakdown and/or release of neurotransmitter.

Fill in the blank(s) with the appropriate word(s).

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The formation of a web-like polymer of fibrin occurs late in the ________ pathway

A.   common B.   extrinsic C.   intrinsic

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The site of muscle attachment that moves during contraction is called the.

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