Chapter 8a Water Flashcards
Why is water the most indispensable nutrient?
Because the body is made up of mostly water and has many uses for water
Water makes up about _______% of a body’s weight?
60
What are the roles of water in the body?
Solvent Cleansing agent Lubrication and cushion Coolant Transportation
The brain is made up of _____% of water
75
The lungs are made up of _____% water
90
Bones are made up of ______% of water
24
Blood is made up of ________% water
85
Skin is made up of ______% water
80
Muscles are made up of ________% water
S75
What is the average daily water loss?
2.6 L
How does the body send a signal to the hypothalamus that it is becoming dehydrated?
Increase in osmolites triggers the hypothalamus to send the signal to drink. “Osmotic thirst”
If ignored, hypovolemic thirst will occur (Decrease in blood volume)
Osmotic thirst is cause by what?
Fluid leaving the cells
Hypovolemic thirst is caused by what?
Loss of fluids and salutes such as in blood loss and takes a lot more to correct.
What are the early dehydration signs?
Fatigue Anxiety Irritability Depression Cravings Cramps Headaches (First complaint)
What are the mature signs of dehydration?
Heartburn Joint pain Back pain Migraines Fibromyalgia Colitis
