Q: Which equation best represents the dynamic state of water balance in the body?

$$\text{Water Intake} = \text{Water Output}$$

Q: Which equation describes the inverse relationship between calcium and phosphorus in the body?

$$\text{[Ca$$^{2+}$$]} \uparrow \Rightarrow \text{[Phos]} \downarrow$$

Q: Which equation best represents the normal range for potassium in the blood?

$$3.5 \leq \text{K}^+ \leq 5.0 \text{ mEq/L}$$

Q: Which equation best represents the recommended sodium intake for adults according to the Dietary Guidelines?

$$\text{Sodium intake} \u003c 2300 \text{ mg/day}$$

Question 1

Which of the following is a primary function of water in the human body?

Accepted Answer

Serves as a solvent for vitamins, minerals, glucose, and amino acids

Question 2

A healthy adult loses approximately how much water daily under normal conditions?

Accepted Answer

1750-3000 mL

Question 3

Which hormone is primarily responsible for controlling daily fluid balance in the body?

Accepted Answer

Vasopressin

Question 4

Insensible water losses occur through which mechanism?

Accepted Answer

Respirations

Question 5

Which equation best represents the dynamic state of water balance in the body?

Accepted Answer

$$	ext{Water Intake} = 	ext{Water Output}$$

Question 6

A net water loss of 7% to 10% of body weight can lead to which of the following symptoms?

Accepted Answer

Dizziness, muscle spasticity, loss of balance, delirium, exhaustion, and collapse

Question 7

Which of the following is a major cation of the intracellular fluid?

Accepted Answer

Potassium ($$	ext{K}^+)$$

Question 8

Which feedback mechanism is primarily responsible for maintaining electrolyte concentrations in the body?

Accepted Answer

Kidney filtration and excretion

Question 9

Which of the following statements about mineral sources is correct?

Accepted Answer

Unrefined or unprocessed foods have more minerals than refined foods

Question 10

Which equation describes the inverse relationship between calcium and phosphorus in the body?

Accepted Answer

$$	ext{[Ca$$^{2+}$$]} \uparrow \Rightarrow 	ext{[Phos]} \downarrow$$

Question 11

Which mineral is most abundant in the human body?

Accepted Answer

Calcium

Question 12

Which dietary pattern is recommended to help reduce hypertension?

Accepted Answer

DASH diet (Dietary Approaches to Stop Hypertension)

Question 13

Which of the following minerals is essential for wound healing, immune function, cell division, and growth?

Accepted Answer

Zinc

Question 14

Which mineral is an essential component of thyroxine (T4) and triiodothyronine (T3)?

Accepted Answer

Iodine

Question 15

Which equation best represents the normal range for potassium in the blood?

Accepted Answer

$$3.5 \leq 	ext{K}^+ \leq 5.0 	ext{ mEq/L}$$

Question 16

Which of the following increases the absorption of dietary iron?

Accepted Answer

Vitamin C

Question 17

A patient presents with microcytic, hypochromic anemia, extreme fatigue, and low ferritin. Which deficiency is most likely?

Accepted Answer

Iron deficiency

Question 18

Which mineral is credited with a major decline in the prevalence and severity of dental caries due to municipal water fluoridation?

Accepted Answer

Fluoride

Question 19

Which equation best represents the recommended sodium intake for adults according to the Dietary Guidelines?

Accepted Answer

$$	ext{Sodium intake} \u003c 2300 	ext{ mg/day}$$

Question 20

Which of the following is a potential consequence of hyperkalemia ($$	ext{K}^+ \u003e 5.0 	ext{ mEq/L}$$)?

Accepted Answer

Heart dysrhythmias

Water and Minerals: Essential Roles in Human Nutrition

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