Body Fluids, Electrolytes, and Minerals

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Questions and Answers

How do plasma proteins and electrolytes function within body fluids?

  • They are major sources of energy for metabolic processes.
  • They significantly influence the movement of water. (correct)
  • They play a minimal role in maintaining fluid balance.
  • They primarily serve digestive functions.

Why is oral rehydration therapy often favored over intravenous therapy for treating diarrhea-related fluid loss?

  • It diminishes the body's requirement for electrolytes.
  • It delivers a wider array of essential nutrients.
  • It is typically more accessible and simpler to administer. (correct)
  • It acts more rapidly to correct dehydration.

Besides direct sunlight exposure, which dietary sources are commonly enhanced with vitamin D to help individuals meet their nutritional needs?

  • Fish and poultry
  • Milk and margarine (correct)
  • Leafy greens and nuts
  • Eggs and butter

Which set of organs collaborates to synthesize the active hormonal form of vitamin D, essential for calcium regulation?

<p>Skin, liver, and kidney (A)</p> Signup and view all the answers

How does sodium contribute to maintaining physiological balance within the body?

<p>It plays a crucial role in water balance. (C)</p> Signup and view all the answers

Why are certain minerals classified as trace elements in nutritional science?

<p>They are present in the body in very small amounts. (C)</p> Signup and view all the answers

Which vitamin, due to its role in gene expression and hormone-like activity, is often considered to function more like a hormone than a typical vitamin?

<p>Vitamin D (C)</p> Signup and view all the answers

What mechanisms facilitate the movement of water and solutes across cellular membranes?

<p>Diffusion and filtration (C)</p> Signup and view all the answers

In the context of nutrition, what are minerals chemically defined as?

<p>Elements (C)</p> Signup and view all the answers

Which type of organic molecule is primarily responsible for maintaining colloidal osmotic pressure in blood?

<p>Protein (B)</p> Signup and view all the answers

Which mineral is predominant inside cells and crucial for maintaining intracellular fluid balance and nerve function?

<p>Potassium (D)</p> Signup and view all the answers

Which individual is generally expected to have the highest percentage of body water content?

<p>A bodybuilder (A)</p> Signup and view all the answers

What is the final organ responsible for producing the physiologically active form of vitamin D, impacting calcium absorption and bone health?

<p>Kidney (A)</p> Signup and view all the answers

Which substance is capable of passing through a capillary membrane?

<p>Glucose (A)</p> Signup and view all the answers

What primary characteristic must a compound possess to be classified as a vitamin?

<p>Perform a vital function (B)</p> Signup and view all the answers

A deficiency in Vitamin C is characteristically associated with which health condition?

<p>Scurvy (C)</p> Signup and view all the answers

Which individual is at the greatest risk of developing osteoporosis?

<p>A 35-year-old woman who has sustained multiple trauma and is bedridden (D)</p> Signup and view all the answers

In growing children, a deficiency in vitamin D that results in the malformation of skeletal tissue, particularly affecting the long bones, is known as?

<p>Rickets (D)</p> Signup and view all the answers

Which disease is specifically associated with a deficiency in niacin (vitamin B3)?

<p>Pellagra (B)</p> Signup and view all the answers

A deficiency in folic acid during pregnancy is associated with which type of anemia in the developing fetus?

<p>Megaloblastic anemia (B)</p> Signup and view all the answers

Flashcards

What are solutes?

Substances dissolved in a solution, like plasma proteins and electrolytes in body fluids.

Why oral rehydration?

Favored for fluid replacement in diarrhea because it is more accessible.

Vitamin D fortified foods

Foods often enriched to help people meet their daily Vitamin D requirements.

Vitamin D synthesis organs

The organs working together to produce active vitamin D.

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Function of sodium

An important function is regulation of water balance in the body.

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Why 'trace' minerals?

They are present in the body in very small amounts.

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Hormone-like vitamin

Vitamin D acts more like a hormone in regulating calcium and bone metabolism.

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Movement across membranes

The ways by which water and solutes move across membranes.

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What are minerals?

Basic chemical substances that cannot be broken down into simpler forms.

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Osmotic pressure molecule

The organic molecule with colloidal osmotic pressure.

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Intracellular mineral

The major mineral found in water inside cells.

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High body water content

A bodybuilder has more muscle mass, which contains more water.

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Final vitamin D organ

The kidney activates vitamin D to its final, active form.

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Passage through capillary

A small molecule that easily passes through capillary walls.

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Defining characteristic of a vitamin?

A vitamin must perform a vital function in the body.

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Scurvy is vitamin C deficiency.

A deficiency in vitamin C.

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Osteoporosis risk factor

Immobilization and trauma can weaken bones and increase osteoporosis risk.

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What are rickets?

Vitamin D deficiency in children causes soft, weak bones.

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Pellagra is niacin deficiency.

Niacin deficiency can cause this disease.

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Megaloblastic anemia

Folic acid deficiency causes abnormally large red blood cells.

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Study Notes

  • Plasma proteins and electrolytes are examples of solutes found in body fluids that influence the movement of water.
  • Oral rehydration therapy is preferred over intravenous therapy for fluid replacement caused by diarrhea because it is more readily available.
  • Milk and margarine are two foods that are commonly fortified with vitamin D.
  • The synthesis of the active hormonal form of vitamin D results from the combined action of the skin, liver, and kidney.
  • An important function of sodium is water balance.
  • Trace minerals are called trace elements because they are found in small quantities in the body.
  • Vitamin D behaves more like a hormone than a vitamin.
  • Water and solutes move across membranes through diffusion and filtration.
  • Minerals are elements.
  • Protein is the organic molecule responsible for creating colloidal osmotic pressure.
  • Potassium is the major mineral in water inside cells.
  • A bodybuilder is most likely to have a high body water content.
  • The kidney is the last organ involved in the production of the physiologically active form of vitamin D.
  • Glucose can pass through a capillary membrane.
  • For a compound to be classified as a vitamin, it must perform a vital function.
  • Vitamin C deficiency is associated with scurvy.
  • A 35-year-old woman who has sustained multiple trauma and is bedridden is most at risk for developing osteoporosis.
  • A vitamin D deficiency in growing children that results in the malformation of skeletal tissue, especially the long bones, is referred to as rickets.
  • Pellagra is the disease associated with niacin deficiency.
  • A folic acid deficiency induces megaloblastic anemia.

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