The thymus gland secretes erythropoietin in response to low blood oxygen.
Answer the following statement true (T) or false (F)
False
The kidneys secrete erythropoietin in response to low blood oxygen.
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The most abundant mineral in the human body is
A) sodium. B) potassium. C) phosphorus. D) calcium. E) hydrogen.
The plasma membrane is mostly made of molecules that have hydrophilic heads and hydrophobic tails. These molecules are called ________
A) proteoglycans B) phospholipids C) glycolipids D) lipoproteins E) glycoproteins
When voltage-gated sodium channels are open, sodium flows ______ the neuron making the inside of the cell more _____.
Fill in the blank(s) with the appropriate word(s).
In the presence of aldosterone, which nephron region reabsorbs the greatest fraction of the filtered Na+?
A. Distal convoluted tubule B. Cortical collecting duct C. Proximal tubule D. Descending limb of the loop of Henle E. Macula densa