Flashcards in BPK 110 Chapter 8 Deck (124)
How much of our body weight is composed of water?
How much water is found inside our cells?
How much water is found outside our cells?
What are two things water content of intra/extracell spaces depend on?
Solute concentrations and blood pressure
What forces water out of the blood?
What is solute concentrations made up of? (3 things)
It is made up of proteins, sodium, potassium etc.
How does water move to achieve proper solute concentrations?
Water moves by osmosis to achieve proper solute concentration
Do we store water in our body?
What are 3 ways to gain water intake?
Food, drinks and metabolism
What are 3 ways to loss water intake?
Feces, urine and evaporation
What are 5 things that help maintain blood pressure?
Adequate water intake by maintaining blood volume
Constriction of blood vessels
Why is it important to maintain blood pressure?
Because it is critical for nutrient delivery
What are the 3 main hormones that regulate water balance?
Antidiuretic hormone (ADH)
What are 5 functions of water?
Solvent (Primary constituent of blood and environment for chemical reactions)
Metabolism and transport
Protection (lubrication, tears and cushioning)
Regulation of body temperature
What are the body symptoms of water deficiency? 4 things
Deficiencies in electrolytes
Decrease in blood volume
Impaired nutrient delivery
What are the 6 early symptoms of water deficiency?
Thirst, headache, fatigue, loss of appetite, dry eyes/mouth and dark urine
What are the 5 late symptoms of water deficiency?
Nausea, difficulty concentrating, confusion, disorientation, and collapse
What percentage of water loss may result in death?
Water loss that is greater than 10-20%.
What can water intoxication lead to? 7 things
Water moving into tissue that leads to swelling which causes disorientation, convulsions, nausea, muscle cramps, slurred speech and confusion.
How do water needs vary? 4 things
Activity level, various conditions, ambient temperatures and diet
What are 4 things that will increase water intake needs?
Low calorie diet
High fiber, high salt diets
Caffeine or alcohol
High protein diet
Why does low calorie diet increase water needs?
More water is needed to excrete wastes from fat/protein metabolism
Why does caffeine and alcohol increase water intake?
Because they are diuretics which means they impair antidiuretic hormone (ADH) action which increases the urge to urinate
They impair antidiuretic hormone which increases the urge to urinate
How many essential minerals are found in plants/animals?
Less than 20 essential minerals
How many major minerals do we need per day?
We need more than 100mg of major minerals per day.
How many trace minerals do we need per day?
We need less than 100 mg of trace minerals per day.
What are 11 minerals found in grain products?
Iron, zinc, selenium, copper, magnesium, chromium, sulphur, manganese, sodium, potassium, and phosphorus
What are 5 minerals found in vegetables and fruits?
Iron, calcium, potassium, magnesium, and molybdenum