NURS 2060 Lecture Notes - Lecture 2: Osmosis, Cirrhosis, Vascular Permeability
Document Summary
Define the following: osmosis: movement of water from low concentration to high concentration of solutes, hydrostatic pressure: mechanical force of h2o pushing against cellular mechanisms (generally higher in capillaries bc its pushing water out into tissues) Know the ion composition of cytoplasm and ecf: na+ mostly ecf, k+ mostly icf, a- mostly icf. Know the source and function of the following: antidiuretic hormone: secreted by the hypothalamus and stored and released by the posterior pituitary. Secreted in response to: osmolality (in blood; more solutes) and bp. Mechanisms: receptors say there"s either a in bp or osmolality, then. Adh is released, the goal is to reserve h2o in the kidney which will bp and bv: aldosterone: regulates reabsorption of na+ (and h2o) in kidney while simultaneously regulating secretion levels of k+ Secreted from the adrenal gland and regulated via renin production. Describe the 4 pathologic changes that result in edema and common causes for each: capillary permeability (leaky capillaries)
