Which statement about cortisol in the bloodstream is correct?
Correct answer: A. It is transported partly bound to plasma proteins
- A. It is transported partly bound to plasma proteins
- B. It is stored in large amounts inside red cells
- C. It travels only inside lymphatic vessels
- D. It dissolves freely without protein transport
Explanation
Cortisol is a lipid-soluble steroid hormone and is transported in blood partly bound to plasma proteins. Protein binding helps carry the hormone in plasma and influences how much is freely available to tissues.
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About Endocrine System
The endocrine system covers hormone-producing glands including the pituitary, thyroid, parathyroids, adrenals, pancreas, pineal gland, ovaries and testes. It explains hormone classes, target-cell responses, feedback control, and the functions of hormones such as insulin, thyroxine, cortisol, growth hormone and ADH, which is often confused with a kidney-produced substance.
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