A&P CHAPTER 23: FLUID, ELECTROLYTE, AND ACID-BASE BALANCE Flashcards
TWO MAJOR FLUID COMPARMENTS
INTRACELLULAR AND EXTRACELLULAR
EXTRACELLULAR VS INTRACELLULAR FLUID COMPARTMENT
EXTRACELLULAR: ALL FLUID OUTSIDE OF CELLS
INTRACELLULAR: ALL WATER/ELECTROLYTES ENCLOSED BY CELL MEMBRANES
SOLUTES ARE CLASSIFIED AS ___ OR ___
ELECTROLYTES (SALTS, PROTEINS, ACIDS, BASES)
OR
NONELECTROLYTES (CANT DISSOCIATE IN A SOLUTION - LIPIDS, CREATINE, GLUCOSE)
WHAT IS THE UNIVERSAL SOLVENT
WATER
MOST EXTRACELLULAR FLUIDS CONTAIN HIGH AMOUNTS OF ___ AND ___
SODIUM (CATION)
CHLORIDE (ANION)
INTRACELLULAR FLUIDS CONTAIN HIGH AMOUNTS OF (3)
POTASSIUM (CATION)
HYDROGEN PHOSPHATE (ANION)
EXCHANGES BETWEEN PLASMA AND INTERSTITIAL FLUID OCCUR ACROSS ____ AND USE ____
CAPILLARY WALLS
HYDROSTATIC PRESSURE
EXCHANGES BETWEEN INTERSTITIAL FLUID AND INTRACELLULAR FLUID OCCUR ACROSS ___ AND USE ____
PLASMA MEMBRANES
PERMEABILITY
ADH INCREASES ___ AND DECREASES ____
INCREASES WATER REABSORPTION AND REDUCES URINE PRODUCTION
INCREASES IN BODY FLUID OSMOLALITY DOES WHAT VS DECREASE IN BODY FLUID OSMOLALITY
INCREASE: TRIGGERS THIRST AND CAUSES ADH RELEASE (STOP PEEING)
DECREASE: STOPS THIRST AND STOPS ADH RELEASE (MORE PEE)
WHERE IS THE THIRST CENTER LOCATED
HYPOTHALAMUS
STIMULI THAT AFFECT WATER INTAKE
OSMORECEPTORS (DRY MOUTH) AND DECREASE IN BLOOD VOLUME OR BLOOD PRESSURE
ROLE OF ALDOSTERONE
HELPS REGULATION OF WATER BALANCE
WHERE IS ALDOSTERONE PRODUCED
ADRENAL GLAND CORTEX
CYCLE OF ALDOSTERONE FOR BLOOD PRESSURE
RENIN IS RELEASED BY KIDNEYS DURING LOW BLOOD PRESSURE
RENIN COMES IN CONTACT WITH ANGIOTENSINOGEN FROM LIVER WHICH TURNS ANGIOTENSINOGEN INTO ANGIOTENSIN 1
ANGIOTENSIN 1 IS CONVERTED TO ANGIOTENSIN 2 BY ENZYMES IN LUNGS
ANGIOTENSIN 2 REACHES ADRENAL CORTEX (GLANDS) AND TELLS IT TO RELEASE ALDOSTERONE
ALDOSTERONE REACHES KIDNEYS AND INCREASES REABSORPTION OF SODIUM IN KIDNEY
THIS INCREASES BLOOD VOLUME AND PRESSURE AND SHUTS OFF THE FEEDBACK LOOP
ROLE OF ATRIAL NATRIURETIC PEPTIDE
HORMONE PRODUCED BY SPECIALIZED MYOCARDIAL CELLS, SECRETED BY NEURONS FROM HYPOTHALAMUS
INCREASES GLOMERULAR FILTRATION RATE AND STOPS RELEASE OF RENIN (ALSO STOPPING ALDOSTERONE)
REDUCED THIRST AND BLOCKS RELEASE OF ADH
DECREASES BLOOD PRESSURE
