11) The ability of a muscle to contract and relax : 1201366

11) The ability of a muscle to contract and relax : 1201366.



11) The ability of a muscle to contract and relax is dependent on the flow of what substance in and out of the muscle cell?

A) phosphorus

B) calcium

C) iron

D) chloride


12) The “command center” of fluid intake is located in the

A) kidneys.

B) adrenal glands.

C) skin.

D) hypothalamus.


13) Which of the following stimulates the thirst mechanism?

A) decreased concentration of solutes in the blood

B) elevated blood volume and pressure

C) dryness of the mouth and throat tissues

D) eating sweet-tasting foods


14) Insensible water loss includes water loss

A) during illness or trauma.

B) during intense exercise.

C) through respiration.

D) through urination.


15) Which of the following is a major mineral?

A) sodium

B) iron

C) zinc

D) copper

16) Hyponatremia is associated with

A) insufficient intake of dietary sodium.

B) excessive intake of dietary sodium.

C) dehydration.

D) overhydration.


17) Diets high in sodium are associated with

A) breast cancer.

B) diabetes mellitus.

C) obesity.

D) high blood pressure.


18) Matt has just been diagnosed with hypertension, and his physician has instructed him to reduce his sodium intake. Which of the following would be good advice for Matt?

A) Snack on fresh fruits and vegetables instead of salty snacks.

B) Do not rinse canned beans with cold water before eating.

C) Eat a variety of canned and dried soups.

D) Eat canned creamed corn instead of fresh.


19) The water that comes from lakes, rivers, and reservoirs is characterized as what kind of water?

A) surface

B) ground

C) spring

D) distilled


20) Diets rich in which of the following nutrients are associated with maintaining healthy blood pressure levels?

A) sodium

B) chloride

C) potassium

D) phosphorus


11) The ability of a muscle to contract and relax : 1201366

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