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A firm decides to purchase a computer for $1,500 at the end of the month. The computer will be used for administrative purposes that do not vary with the volume of product that the firm makes. The computer has no re-sale value. This is a fixed cost. At the beginning of the month, this cost is non-sunk.
Osmoreceptors
Specialized sensory receptors that detect changes in the osmotic pressure of body fluids and help regulate fluid balance.
Juxtaglomerular Apparatus
Complex consisting of juxtaglomerular cells of the afferent arteriole and macular densa cells of the distal convoluted tubule near the renal corpuscle; secretes renin.
Atrial Natriuretic Hormone
Peptide released from the atria when atrial blood pressure is increased; lowers blood pressure by increasing the rate of urinary production, thus reducing blood volume.
Blood Pressure
Tension of the blood within the blood vessels; commonly expressed in units of millimeters of mercury (mm Hg).
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