Fluids Week 11 lecture Flashcards
How much of our body mass is made of H20
45-60%
How much of a babies body is water?
70-80%
What are the 2 compartments that organize water in our bodies?
Intracellular- 2/3rds water * Cytosol inside cells * Adipose tissue = H20 free- hydrophobic *Muscle tissue= lots of water Extracellular- 1/3rd water *Intestinal fluid *Plasma * Lymph vessles - 3 liters
Over 24 hours how much CSF leaves through ventricles
20L
17L returns to body
3L collects in Lymph system
What are the 2 sources of water intake
Ingested - preformed H20
Metabolic water - made in body - 200L made by mitochondria
How much water is consumed in drinks
How much water is consumed in food
1600mL consumed drinks
700mL consumed food
How much water do we lose a day
2500ml
- 1500mL urine
- 500mL skin
- 300 mL respiration
- 200 mL feces
What are the small particles in fluid called
Solutes
What are the 2 main types of solutes
Non-electrolytes
Electrolytes
What type of bonds are in non-electrolytes
Covalent - do not dissociate in h20
What are the 2 most abundent types of non-electrolytes for homeostasis
- Gluclose
2. Urea
Describe osmosis
Osmosis is the movement of water or other solvent through a plasma membrane from a region of low solute concentration to a region of high solute concentration. Osmosis is passive transport, meaning it does not require energy to be applied.
What is urea
related to protein use/ amino acids
What type of bonds are in electrolytes
Ionic bonds- dissolve in h20
What are the 3 types on Electrolytes
Acids
Bases
Salts