Nurs 115 Final Exam: Neuro, Electrolytes, Ventilation, and Acid Base Liberty University Latest Update.

Nurs 115 Final Exam: Neuro, Electrolytes, Ventilation, and Acid Base Liberty University Latest Update. What factors determine the water weight? - CORRECT ANSWER Infants have greater water weight Women have lower water weight Obese people have lower water weight After age 60 water content drops to about 45% Skin is _______ so it snaps right back - CORRECT ANSWER Elastic Why would skin elasticity to go down? - CORRECT ANSWER Decrease in interstitial fluid What is ECF? - CORRECT ANSWER Extracellular fluid Fluid outside of the cell Either interstitial (in between tissues) or intravascular (within the vessel) What is ICF? - CORRECT ANSWER Intracellular fluid Fluid within or inside the cell What is the average water weight for young males? What is the average water weight for young females? - CORRECT ANSWER For males it is 60% For females it is 50% What electrolytes are considered cations? What type of charge does a cation have? - CORRECT ANSWER Sodium, potassium, calcium, and magnesium are cations Cations have positive charges What electrolytes are considered anions? What type of charge does a anion have? - CORRECT ANSWER Chloride, bicarbonate, and phosphate are anions Anions have a negative charge What electrolytes are ICF? ECF? - CORRECT ANSWER IntraCF electrolytes - (2+/1-) - generally smaller numbers - • Potassium - K+ permeates cell membranes • Phosphate - P- (aka phosphate) • Magnesium - Mg+ ExtraCF electrolytes - (2+/2-) (generally larger numbers • Sodium - Na+ • Chloride - Cl- • Calcium - Ca+ • Bicarbonate - HCO3 Osmolality measures ______ Osmolarity measures _______ - CORRECT ANSWER Kilograms Liters What are the normal levels of sodium in the blood? - CORRECT ANSWER 135 - 145 mEq/L What is the main ECF cation? - CORRECT ANSWER Na+ What does sodium do for you? - CORRECT ANSWER Controls body water distribution and governs osmolarity (solute to water ratio) Controls water distribution by osmosis Facilitates transmission of nerve and muscle impulses through NA-K pump