"Metabolism" refers to
A) the reactions in the body that break down proteins and nucleic acids.
B) the reactions in the body that synthesize proteins and nucleic acids.
C) all of the chemical reactions in a cell.
D) the breakdown of glucose molecules to release energy.
C
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Which organ does NOT produce hormones?
A) heart B) spleen C) kidney D) skin
Depolarization occurs at the AV node
a. during the P wave b. between the P wave and QRS complex c. during the QRS complex d. between the QRS complex and T wave e. during the T wave
Blood drains from the peritubular and vasa recta capillary beds into small veins. Which is the smallest of these veins (also called the interlobular veins)?
A) renal vein B) segmental veins C) cortical radiate (also called interlobar veins) D) arcuate veins
Skeletal muscles are attached to bones via _______.
Fill in the blank(s) with the appropriate word(s).