chapter 9

Question 1

water functions

Answer 1

-temperature regulation
-removal of waste products
-component of body fluids
-distribution of nutrients
-lubricant
-chemical reaction
-acid-base balance

Question 2

water % by tissue type
muscle:
bone:
adipose tissue:

Answer 2

73%
20%
10-20%

Question 3

what % of weight is made up by water

Answer 3

60%

Question 4

Osmosis:

Answer 4

passage of water through a membrane from an area of lower electrolyte concentration to an area
of higher electrolyte concentration

Question 5

water intake:

Answer 5

fluids, foods, water produced from metabolism

Question 6

water output:

Answer 6

urine, skin perspiration, lung respiration, feces

Question 7

how much water do we need?

Answer 7

30-35 ml/kg

Question 8

how is water made safe to drink?

Answer 8

-testing & reporting
-public water systems
-chlorination
-home purification systems

Question 9

types of water

Answer 9

soft: sodium, contaminants like cadium and lead dissolve more readily in soft water
hard: calcium and magnesium

Question 10

soft water:

Answer 10

<17 ppm

Question 11

slightly hard water:

Answer 11

17-60 ppm

Question 12

moderately hard water:

Answer 12

60-120 ppm

Question 13

hard water:

Answer 13

120-180 ppm

Question 14

very hard water

Answer 14

> 180 ppm

Question 15

water sources:

Answer 15

surface water:
-mountains, lakes, rivers
-exposure to contaminates
-filtered by water treatment plans
-aeration and sunlight cleanse
ground water:
-aquifiers
-less contamination
desalination
bottle water