Question 1

Good sources of potassium include all of the following EXCEPT:

Accepted Answer

A)  tomatoes.
B)  bananas.
C)  snack crackers.
D)  potatoes.

Question 2

The function of synovial fluid is to:

Accepted Answer

A)  allow excess heat to escape from the body.
B)  lubricate joints.
C)  provide a protective cushion around the developing fetus.
D)  lubricate the mouth.

Question 3

The DASH (Dietary Approach to Stop Hypertension) diet is best characterized by:

Accepted Answer

A)  high intake of fruits and vegetables,but no dairy foods.
B)  plenty of fruits,vegetables & whole grains,with lean protein and low-fat dairy foods.
C)  abundant whole & refined grains and high-protein foods,but low in dairy.
D)  plenty of high-protein and dairy foods.

Question 4

An electrical charge or membrane potential exists across nerve cell membranes because:

Accepted Answer

A)  the membrane is permeable to sodium ions.
B)  the cell membrane allows more positively charged ions to leak out than to leak in.
C)  the membrane is impermeable to all ions.
D)  water can flow freely across the membrane.

Question 5

The best source of potassium per calorie comes from:

Accepted Answer

A)  fruits and vegetables.
B)  whole grains.
C)  lean protein.
D)  low-fat dairy.

Question 6

Salt is added to processed food for all of the following reasons EXCEPT:

Accepted Answer

A)  to balance potassium content.
B)  to inhibit the growth of bacteria.
C)  to enhance flavor.
D)  as a preservative.

Question 7

Which organ is responsible for regulating sodium and chloride concentrations in the body?

Accepted Answer

A)  Brain
B)  Kidneys
C)  Liver
D)  Pancreas

Question 8

Which hormone signals the kidneys to reabsorb water back into the bloodstream?

Accepted Answer

A)  Angiotensinogen
B)  Antidiuretic hormone
C)  Calcitonin
D)  Adrenal hormone

Question 9

The shrinking of a strawberry from water loss after being sprinkled with sugar is an example of:

Accepted Answer

A)  condensation.
B)  osmosis.
C)  alkalosis.
D)  diffusion.

Question 10

Healthy blood pressure is defined as ___________________ mm of mercury.

Accepted Answer

A)  ≤ 120/80
B)  ≤ 140/90
C)  ≤ 160/100
D)  between 120/80 and 140/90

Question 11

Extracellular fluid does NOT include:

Accepted Answer

A)  blood.
B)  lymph.
C)  fluid within cells.
D)  interstitial fluid.

Question 12

A water loss of _______ of body weight can impair physical and cognitive performance.

Accepted Answer

A)  1-2%
B)  5-7%
C)  10%
D)  20%

Question 13

Drinking plain water after a long period of excessive sweating can do all of the following EXCEPT:

Accepted Answer

A)  dilute the sodium in the blood.
B)  cause water toxicity.
C)  result in nausea,muscle cramps and confusion.
D)  increase potassium in the blood causing high blood pressure.

Question 14

Which of the following individuals is at risk for dehydration?

Accepted Answer

A)  An athlete,exercising in cool weather
B)  An elderly woman,just returning from a 4 hour flight
C)  A child recovering from diarrhea
D)  All are potentially at risk for dehydration

Question 15

The UL for sodium intake is _______ mg/day.

Accepted Answer

A)  1000
B)  1850
C)  2300
D)  One has not been established

Question 16

Water is absorbed in the gastrointestinal tract by:

Accepted Answer

A)  active transport.
B)  Brownian motion.
C)  osmosis.
D)  endocytosis.

Question 17

In most people,hypertension results from:

Accepted Answer

A)  no obvious external cause.
B)  diabetes.
C)  kidney disease.
D)  atherosclerosis.

Question 18

Osmosis requires all of the following EXCEPT:

Accepted Answer

A)  glucose.
B)  a selectively permeable membrane.
C)  dissolved solutes.
D)  water.

Question 19

Which of the following is LEAST likely to result in an increased need for water?

Accepted Answer

A)  High potassium intake
B)  A low-calorie diet
C)  Consuming many high protein foods
D)  Lactation

Question 20

When table salt is dissolved in water,the sodium and chloride ions:

Accepted Answer

A)  form a covalent bond.
B)  dissociate.
C)  form an ionic bond.
D)  associate.

Exam 10: Water and the Electrolytes

Good sources of potassium include all of the following EXCEPT:

Correct AnswerverifiedShow Answer

In most people,hypertension results from:

Correct AnswerverifiedShow Answer

Which hormone signals the kidneys to reabsorb water back into the bloodstream?

Correct AnswerverifiedShow Answer

When table salt is dissolved in water,the sodium and chloride ions:

Correct AnswerverifiedShow Answer

Which organ is responsible for regulating sodium and chloride concentrations in the body?

Correct AnswerverifiedShow Answer

Osmosis requires all of the following EXCEPT:

Correct AnswerverifiedShow Answer

A water loss of _______ of body weight can impair physical and cognitive performance.

Correct AnswerverifiedShow Answer

Water is absorbed in the gastrointestinal tract by:

Correct AnswerverifiedShow Answer

Healthy blood pressure is defined as ___________________ mm of mercury.

Correct AnswerverifiedShow Answer

The DASH (Dietary Approach to Stop Hypertension) diet is best characterized by:

Correct AnswerverifiedShow Answer

An electrical charge or membrane potential exists across nerve cell membranes because:

Correct AnswerverifiedShow Answer

The shrinking of a strawberry from water loss after being sprinkled with sugar is an example of:

Correct AnswerverifiedShow Answer

Drinking plain water after a long period of excessive sweating can do all of the following EXCEPT:

Correct AnswerverifiedShow Answer

The UL for sodium intake is _______ mg/day.

Correct AnswerverifiedShow Answer

The function of synovial fluid is to:

Correct AnswerverifiedShow Answer

Which of the following is LEAST likely to result in an increased need for water?

Correct AnswerverifiedShow Answer

Extracellular fluid does NOT include:

Correct AnswerverifiedShow Answer

Salt is added to processed food for all of the following reasons EXCEPT:

Correct AnswerverifiedShow Answer

Which of the following individuals is at risk for dehydration?

Correct AnswerverifiedShow Answer

The best source of potassium per calorie comes from:

Correct AnswerverifiedShow Answer

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