Tonicity - Study guides, Class notes & Summaries

most important nutrient for life? Correct Answer-water 60% body weight for men, 50% for women, 40-70 for obese individuals body requirements depend on 4 factors: weight, enviro, activity, development typically need 1cc/kcal we get 80% of water from beverages, less than 20% from fruits/veg and the other small amount from metabolism store it in proteins, carbs, electrolytes, creatine release 1L of water for every 350mg CHO burned what is dehydration Correct Answer-caused by: lack of ...

Tonicity Ans: Concentration of a substance dissolved in water Isotonic fluids Ans: Same concentration as body fluids (0.9% NaCl, Ringer's Solution, Lactated Ringer's, 5% Dextrose in water) Hypertonic solution Ans: Solute concentration greater than that of body fluids (10-15% Dextrose in water, 3% NaCl, Sodium Bicarbonate 5%) Hypotonic solution Ans: Solute concentration less than that of body fluids (0.45% NaCl) ECF Ans: Extracellular fluid Every 72 hours Ans: How often is standa...

Chapter 01: Cellular Biology MULTIPLE CHOICE 1. A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student? a. A single circular chromosome b. A nucleus c. Free-floating nuclear material d. No organelles ANS: B The cell described is a eukaryotic cell, so it has histones and a supercoiled DNA within its nucleus; thus, the nucleus should be observed. A single circular chromosome ca...

infusion therapy CORRECT ANSWER is the delivery of medications in solution and fluids by the parenteral (piercing of skin or mucous membranes) route through a wide variety of catheter types and locations using multiple procedures. IV is the most common route infusion therapy CORRECT ANSWER Most common reasons for using ________ _________: - Maintain fluid balance or correct fluid imbalance - Maintain electrolyte or acid-base balance or correct a problem with said balance - Administe...

Hypertonic Solution CORRECT ANSWER-A solution with an osmolality higher than that of serum Hypotonic Solution CORRECT ANSWER-A solution with an osmolality lower than that of serum Isotonic Solution CORRECT ANSWER-A solution with the same osmolality as serum and other body fluids Osmosis CORRECT ANSWER-The process by which fluid moves across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration Tonicity CORRECT ANSWER-Fluid tension o...

Components of the homeostatic control loop : receptor, control center, effector Negative feedback : -works to oppose change -brings condition back to a set point Positive feedback : -works to enhance change -brings condition further away from a set point Tonicity : relates to how the solution influences the shape of body cells Hypotonic solution : RBC undergoes hemolysis (swelling) Hypertonic solution : RBC undergoes crenation (shrinking) 2 | P a g e Osmosis : -concentration of s...

CNSC EXAM PREP QUESTIONS AND ANSWERS, GRADED A+/ VERIFIED/ D5W (5% dextrose) - -Dextrose - 50 Sodium - 0 Chloride - 0 Tonicity - Hypotonic Free water - 1000 0.45% NaCl (1/2 NS) - -Dextrose - 0 Sodium - 77 Chloride - 77 Tonicity - Hypotonic Free water - 500 0.9% NaCl (normal saline) - -Dextrose - 0 Sodium - 154 Chloride - 154 Tonicity - Isotonic Free water - 0 3% NaCl (hypertonic solution) - -Dextrose - 0 Sodium - 513 Chloride - 513 Tonicity - Hypertonic Free water - -2...

Carbonyl within a skeleton - Answer-Ketone Carbonyl at the end of a skeleton - Answer-Aldehyde Amino - Answer-Is a weak base, (Monomer is amines) Sulfhydryl - Answer-(Thiols) Helps stabilize protein structure Phosphate - Answer-Organic Phosphates (Monomer) Phosphate - Answer-VERY important for ATP Phosphate - Answer-Can add a neg. charge React with Water, releasing energy Carbonyl - AnswerMethyl - AnswerMethyl - Answer-Monomer is Methylated compounds Hydroxyl - AnswerMethyl group + DNA ...

minimum urine output for adult 0.5mL/kg/hr ADH (antidiuretic hormone) - water retainer - vasoconstrictor (also called Vasopressin) - produced by hypothalamus - store and released from posterior pituitary ADH pathway - hypothalamus senses low blood volumed and increased serum osmolality - signal pituitary to release ADH - ADH causes kidney to retain water - water retention increases blood volume and decreases serum osmolality ANP (atrial natriuretic peptide) -...

What percentage of the human body is water? - 60% What is intracellular fluid? - Fluid inside of the cell What is extracellular fluid? - Fluid outside of the cell What percentage of body weight is due to intracellular fluid? - 40% What percentage of body weight is due to extracellular fluid? - 20% Where is most extracellular fluid found? - In intravascular spaces What are intravascular spaces? - Spaces outside of the cell wall What is interstitial fluid? - Filtrate of blood ...