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NSG 533 Module 2 + 3 Exam 2025 Questions and Answers Total amount of sodium in the body - ....ANSWER ...-Responsible for ECF volume Total amount of water in the body - ....ANSWER ...-responsible for extracellular sodium concentration ADH secretion - ....ANSWER ...-initiated by a change in plasma osmolality or decreases circulating blood volume/blood pressure Osmoreceptors - ....ANSWER ...-changes in plasma osmolality stimulate these in the hypothalamus Serum osmolality is calculated as: - ....ANSWER ...-2 x (sodium concentration) + (glucose concentration/18) + (BUN/2.8) osmolality - ....ANSWER ...-deterred by the total solute concentration in a fluid compartment tonicity - ....ANSWER ...-ability of the combined effect of all the solutes to generate an osmotic deriving force that causes water movement form one compartment to another effective osmoles - ....ANSWER ...-solutes capable of changing the tonicity; e.g. sodium, glucose, mannitol and sorbitol …FOR STUDENTS ONLY…©️2025 ALL RIGHTS RESERVED… 1