click below
click below
Normal Size Small Size show me how
Bio 137
Chapters 6-10
| Term | Definition |
|---|---|
| Sources: Food, Drink and Biosynthesis Body Content: 60% of body weight Lose Thru: Urine, Sweat, Breath or Feces | Water Homeostasis |
| Water 60% Fat 17% Protein 15% Minerals 5% | Chemical Composition of the Body |
| National Academy of Sciences: 1mL of water per Kcal burned | How Much Water do we Need? |
| Raw tomatoes 94% Raw Carrots 88% Whole Milk 87% Apple 84% | Foods are mostly Water (By Weight) |
| Baked Potato 75% Cook Beans 69% Fried Steak 55% Peanut Butter 2% | Foods are mostly Water (By Weight) cont |
| Thirsty- Reflex may be block by illness, exercise or old Sweating- (or will be) Heavy sweating loss of 2 liters of water (4-5 pounds per hour) Produce < 2 cups of urine per day | Drink More Water if you are |
| Water Carbs, Sugar (Exercise beyond one hour) Electrolytes, Salts (Exercise beyond 2 hours) | Prehydration to counteract Dehydration (Order of Importance for a athlete) |
| Caffeine can enhance performance in short duration events Diuretics (substance, promotes production of urine) Lessen the amount of diuretics you consume and retain | Caffeine and Alcohol |
| > 20liters a day Hyponatremia (to little soda in the blood) Mental Dulling | Can I intake to much Water (Water intoxication) |
| Confusion Coma Convulsions Death | Water Intoxication |
| 40% Intracellular Fluid 20% Extracellular Fluid | 60% of Body Weight (Water) Breakdown |
| Regulates what can move in and out of a cell | Plasma Membrane |
| Na+ C1- Glucose Ca++ | Composition of Extracellular Fluid |
| K+ Protein- Phosphate mg++ Sulfate | Composition of Intracellular Fluid |
| Gated channels that determine when solutes Na+ - C1- passes thru a cell | Membrane Channels |
| When concentration is unequal cell membrane will diffuse to equal out the concentration | Osmosis |
| Osmorecptor Anti-diuretic Hormone (ADH) Activate Thirst Receptors | Regulation of ECF Osmolarity |
| ECF 9 g per liter Fresh Water 0.06 g per liter Sea Water 30 g per liter | Salt NaC1 Concentration |
| Standard Saline Solution 0.9% 5% Glucose Ringers Solution (Na, K, Ca, C1 | Solutions Isotonic (solutions that will not disrupt) to ECF |
| OH- (Hydroxide Ion) and H+ (Hydrogen Ion) | Ionization of Water |
| 0 Acidic 7 Basic 14 (Sour) (Bitter) | pH Scale |
| Lower the pH of a Solution | Acids (HC1, H2CO3, H2SO4, CO2) |
| Raises the pH of a solution | Bases (NaOH, NH3, KOH) |
| 7.4 Slightly Alkaline | Human pH Level |
| 2 on pH Scale | Gastric Juice HCI (Fluid in stomach) |
| 6/7- Death 7/7.35- Acidosis 7.35/7.45- Normal pH 7.45/7.8- Alkalosis 7.8/9- Death | Why is pH Important (Blood pH Levels) |
| Source of change and regulation of pH | Respiratory Acidosis/Alkalosis (CO2 + H20 <> H2CO3 <> HCO3- + H+ Lungs10% Muscle70% |
| Holding your breath | What can Cause pH to Drop |
| Acid formation during exercise Vomiting (Loss of Gastric Juice) Starvation/Low Carb Diet Untreated Diabetes Mellitus | Metabolic Acidosis/Alkalosis |