A small, elevated patch of melanized skin that often has hair is called a ________.
Fill in the blank(s) with the appropriate word(s).
nevus
Anatomy & Physiology
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Which ventricle is continuous with the central canal of the spinal cord?
A) first B) second C) third D) fourth
Anatomy & Physiology
The most important chemical regulator of respiration is
A) oxygen. B) bicarbonate ion. C) carbon dioxide. D) hemoglobin. E) sodium ion.
Anatomy & Physiology
The extent of contraction of arteriolar smooth muscle depends on the cytosolic concentration of what element?
a. iron b. phosphorus c. potassium d. magnesium e. calcium
Anatomy & Physiology
Those hormones that are nonpolar can pass through the plasma membrane and are called
A. hydrophilic. B. hydrophobic. C. lipophilic. D. Both hydrophobic and lipophilic are correct.
Anatomy & Physiology