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Related Flashcards
Cards In This Set
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What affects the amount and distribution of body fluids?
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Age, gender, and amount of fat
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How much water does a fat cell contain?
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Almost NO water.
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Water in all spaces is exchanged ____ while maintaing constant fluid volume.
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Continually
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What triggers the sensation of thirst?
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A rising blood osmolarity or a decreasing blood volume.
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What are sensations are felt by a human that trigger thirst?
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Dry mouth, or thought of not having a drink for a while
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Of all the water loss pathways, which is the most important and most sensitive?
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The kidneys
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The kidneys ____ and ____ water loss.
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Regulate, Adjust
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What is the minimum amount of urine per day needed to excrete toxic waste products?
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400-600 mL
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What is the minimum volume of urine called?
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Obligatory urine output
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If 24-hr urine output falls below the obligatory output amount wastes are retained and could cause?
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Lethal electrolyte imbalances, acidosis, and a toxic buildup of nitrogen.
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Insensible water loss
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Water loss from the skin, lungs, and stool
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What is the amount of sweating controlled by?
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Anotomic Nervous System, body temp, and blood flow in the skin
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What does the endocrine system help control?
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Fluid and electrolyte imbalances
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Three hormones that help control critical fluid and electrolyte imbalances are
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Aldosterone, Antidiuretic hormone (ADH) and natriuretic peptide (NP)
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The hormone secreted by the adrenal cortex whenever sodium level in the extracellular fluid (ECF) is decreased.
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Aldosterone
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