Basics Test 1 keiser university Questions and Answers

Basics Test 1 keiser university Questions and Answers ▪ Approximately 60% of typical adult is fluid ▪ Varies with age, body size, gender ▪ Intracellular fluid -2/3 ▪ Extracellular fluid -1/3 ▪ Intravascular ▪ Interstitial ▪ Transcellular (CSF, pericardial, synovial, intraocular) "Third spacing": lo ss of ECF into space that does not contribute to equilibrium (ex. burns) ↓ lean muscle mass = ↓ fluid (like gero's) ↓ Ans- Body fluid excretion Ans- fluids leave the body by several routes skin, lungs, GI tract and kidneys Ans- *Ch.13 Fluid and Electrolytes: Balance and Disturbances* pg.238 ATI Chapters 43, 44 & 45 ↓ Ans- Objective 2: Ans- Describe the role of the kidneys, lungs, and endocrine glands in regulating the body's fluid composition ↓ Ans- Function of the k idneys in maintaining normal fluid balance Ans- ▪ regulation of ECF volume and osmolality by selective retention and excretion of body fluids ▪ regulation of normal electrolyte levels in the ECF by selective electrolyte retention and excretion ▪ regulati on of pH of the ECF by retention of hydrogen ions ▪ excretion of metabolic wastes and toxic substances *They also act on bloodborne messengers = aldosterone and ADH (antidiuretic hormone) Lung functions in maintaining fluid comp. Ans- the lungs remove approximately 300mL of water daily through exhalation ↓ Ans- Endocrine gland functions Ans- hypothalamus makes ADH = stored in the posterior pituitary gland = released as needed to conserve water *ADH functions* by maintaing the osmotic pressure of the cells by controlling the retention or excretion of water by the kidneys and by regulating blood volume Aldosterone = a mineralcorticoid = secreted by the adrenal cortex