All of the following are reasons why some hormones need assistance to travel in the blood except

A. they are easily filtered from the blood into the kidney tubules.
B. they are small enough to be easily digested by blood enzymes.
C. they cannot dissolve in the blood because they are water-soluble.
D. they have low solubility in blood plasma due to their chemical nature.


Answer: C

Anatomy & Physiology

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When total body input of a particular substance equals its total body output, a(n) ____________________ balance exists

Fill in the blank(s) with correct word

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As the filtrate passes through the rest of the nephron, tubular reabsorption and tubular secretion convert it to:

A) salt. B) water. C) urine. D) glucose.

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The stomach is ________ to the left kidney

A) lateral B) anterior C) inferior D) superior

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The skin is waterproof, not allowing water to come in or out. Which protein is most responsible for this property?

A. Carotene B. Keratin C. Melanin D. Sebum

Anatomy & Physiology