Do Now:

1
Nutrients and Homeostasis

• Do Now
• Is obesity considered a disability? Explain.
• Why do most diets have little long-term success?
• How might such diets be detrimental?

2
An increase in 5 body weight can cause fat
deposits in the liver
3
A majority of liver transplants were due to
hepatitis, more often it is due to an unexplained
cause (cryptogenic) but all cases have seen fat
deposits on the liver
4
Normal vs Abnormal Heart
5
Normal vs Abnormal Heart
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True or False-You can never drink too much water.

• Drinking more than 1.5 liters an hour dilutes the
  blood and causes sodium concentration in the
  blood to drop and osmotic pressure
  increases.water then enters cells causing them
  to swell.brain swelling can occur rapidly
  causing a coma

7
Anticipatory Set But until the 1740s,
British sailors on long voyages were crippled by
scurvy, an illness that produced weakness,
bruising, bleeding gums, and painful joints.
Meanwhile, Dutch sailors who ate
oranges at sea never got scurvy. British
physician James Lind hypothesized that citrus
fruits might not only cure the illness but
prevent it as well. Lind divided the
crew of one ship into six groups and gave each
different foods. Sailors eating oranges, lemons,
and limes remained healthy. Simply adding
vitamin C eliminated scurvy at sea. The sailors
adopted the name Limies.
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The six types of nutrients are WATER,
CARBOHYDRATES, PROTEINS, FATS, MINERALS, AND
VITAMINS.

• Water makes up 55 to 60 of your body.
• involved in nearly every cell and body process
• need 2 liters (8 cups) a day to replace fluid lost

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• Carbohydrates are the main source of energy for
  the body.

• simple and complex carbohydrates supply glucose
• fiber from plant foods helps elimination

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• Proteins are necessary for growth and repair of
  the bodys cells.

• enzymes
• body makes 12 out of 20 amino acids
• other eight essential amino acids come from food
  (ex. Beans and Rice)
• Fats provide energy and key building components.
• fats are saturated and unsaturated
• essential fatty acids come from food
• component of hormones and cell membranes
• myelin sheaths
• insulation

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Protein malnutrition

• Kwashiokor severe form of protein insufficiency
• edema, irritability, anorexia, ulcerating
  dermatoses, and an enlarged liver with fatty
  infiltrates

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5 signs your not getting enough fat in your diet

• 1. Hunger
• 2. Dry skin.
• 3. Poor body temperature regulation
• 4. Extreme mental fatigue
• 5. Loss of your menstrual cycle

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• Minerals are inorganic materials.

• help to build or repair tissues
• replenished by eating variety of foods

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• Vitamins are organic molecules that work with
  enzymes.

• vitamins are fat-soluble and water-soluble
• regulate cell functions, growth, development
• replenished by eating variety of foods

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Essential Vitamins
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Meeting nutritional needs supports good health.

• During puberty, you require more nutrients and
  Calories.

• 1g of protein or carbohydrate equals 4 Calories.
• 1g of fat equals 9 Calories.

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• A balanced diet of whole foods provides the best
  nutrients and Calories.

• Food and physical activity also need to be
  balanced.

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• Food labels can help you make good eating
  choices.

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Chapter 32 The Digestive System Section
32.1-Nutrients and Homeostasis
Student Learning Objective You should be able to
identify six types of nutrients that help
maintain homeostasis and describe ways of
meeting nutritional needs that support good
health.
Essential Question What nutrients do cells
require?
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Vocabulary mineral vitamin Calorie
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• Do now
• Would a diet higher in protein or in complex
  carbohydrates give you more energy? Explain your
  answer.
• What nutritional advantages do unprocessed foods
  offer over processed foods?

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• Independent Practice/HW
• Read section 32.1, Complete FAQs pg 914