Understanding Metabolism and Human Energy

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Questions and Answers

What is the equivalent of human energy in terms of muscle contractions and heat production?

  • Heat = calories = energy (correct)
  • Basal Metabolic Rate
  • Building reactions
  • Catabolism

Which phase involves smaller molecules becoming larger and more complex?

  • Anabolism (correct)
  • Ingestion
  • Catabolism
  • Basal Metabolic Rate

What process involves the physical chewing and churning of food by the stomach and segmentation of the intestine?

  • Digestion (correct)
  • Propulsion
  • Metabolic Rate
  • Energy Expenditure

What is the largest component of total daily energy expenditure, accounting for 60%-75%?

<p>Basal Metabolic Rate (D)</p> Signup and view all the answers

Which phase involves the release of energy as larger molecules become smaller?

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

What refers to the total daily energy expenditure and the amount of energy liberated or expended in a given unit of time?

<p><strong>Metabolic Rate</strong> (C)</p> Signup and view all the answers

Which nutrient deficiency affects 780 million people worldwide?

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

Which body type is characterized by a high forehead, receding chin, and little muscle and fat?

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

What is the most prevalent form of malnutrition worldwide?

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

Which body type is characterized by fats accumulated in hips, middle abdomen, and thighs, affecting organs like kidney, uterus, intestines, bladder, and bowel?

<p>Gynoid/Pear-Shaped (B)</p> Signup and view all the answers

What does extreme loss of weight and body wasting associated with serious illness refer to?

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

What does the term 'Absorption' refer to in the digestive system?

<p>Occurs when the nutrient moves from the GI tract to the blood or lymph (A)</p> Signup and view all the answers

What is the most common symptom of iodine deficiency?

<p>Swelling of the thyroid gland (A)</p> Signup and view all the answers

What are the characteristics of an Android/Apple Shape body type?

<p>Mostly males with fat mostly on the abdomen (B)</p> Signup and view all the answers

What is the major risk for an Android/Apple Shape body type?

<p>Major risk for heart damage and heart disease due to high cholesterol (D)</p> Signup and view all the answers

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Study Notes

Energy Production and Metabolism

  • Equivalent of human energy in muscle contractions and heat production denotes metabolic processes during physical activities.
  • Anabolic phase involves smaller molecules becoming larger and more complex through biosynthetic pathways.
  • Catabolic phase concerns the breakdown of larger molecules into smaller ones, releasing energy.

Digestive Processes

  • Mechanical digestion involves the physical chewing of food and the churning action performed by the stomach and intestines.
  • Segmentation refers to the rhythmic contractions in the intestines, promoting food mixing and nutrient absorption.

Energy Expenditure

  • The largest component of total daily energy expenditure is known as Basal Metabolic Rate (BMR), which accounts for 60%-75% of energy use.
  • Total Daily Energy Expenditure (TDEE) refers to the overall energy expended in a single day.

Nutritional Deficiencies

  • Iodine deficiency affects 780 million people globally and can lead to thyroid-related disorders.
  • The most prevalent form of malnutrition worldwide is protein-energy malnutrition, affecting millions, especially in underdeveloped regions.

Body Type Characteristics

  • A body type characterized by a high forehead, receding chin, and low muscle and fat is known as ectomorphic.
  • Android/Apple shape body type features fat accumulation in the hips, abdomen, and thighs, posing risks to organs like the kidneys and uterus.
  • The major risk for an Android/Apple shape body type includes increased likelihood of cardiovascular diseases and metabolic syndromes.

Severe Weight Loss

  • Extreme weight loss and body wasting associated with serious illness is referred to as cachexia, often seen in chronic diseases.

Absorption in Digestion

  • Absorption in the digestive system refers to the process where nutrients from digested food are taken up by the intestinal walls into the bloodstream.

Symptoms of Nutritional Deficiencies

  • The most common symptom of iodine deficiency typically involves goiter or hypothyroidism symptoms, reflecting thyroid dysfunction.

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