Essay about Human Nutrition 1 - Lesson 8

1558 Words Oct 28th, 2013 7 Pages

1. Explain in 2-3 sentences each, the role of water in the body for 5 different physiological processes. • Fluid intake and fluid excretion: There is usually a balance between intake and excretion of water. If the water balance becomes unbalanced, this can greatly affect various bodily functions such as blood pressure, blood sugar levels or brain function. This imbalance will also create a thirst reaction and by the time we perceive this, our body is already mildly dehydrated.

• Water as a means of transport: Most of the water, which a person takes in each day, is required to transport nutrients into the cells. To be able to bind and remove metabolic waste products it is important that the water is not
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Give your answer in 1-2 paragraphs
Mild dehydration symptoms are:
• Increased or constant vomiting for more than a day
• Fever over 38.3 C, but less than 39.4C
• Diarrhoea for more than 2 days
• Weight loss
• Decreased urine production
• Weakness
• Dry mouth
• Thirst

* Athletes, the elderly and people who don’t drink sufficient amounts of water (especially in hot weather) can all suffer from mild dehydration.

Severe dehydration symptoms are:
• Fever higher than 39.4C
• Confusion
• Lethargy
• Seizures
• Difficulty breathing
• Chest or abdominal pain
• Fainting
• No urine in the last 12 hours
• Migraine headache

Chronic dehydration symptoms are:
• Fatigue, Energy Loss: Dehydration of the tissues causes enzymatic activity to slow down
• Constipation: the colon takes too much water to give to other parts of the body
• Digestive Disorders: the secretions of digestive juices are less
• High and Low Blood Pressure: The body’s blood volume is not enough to completely fill the entire set of arteries, veins, and capillaries
• Gastritis, Stomach Ulcers: To protect its mucous membranes from being destroyed by the acidic digestive fluid it produces, the stomach secretes a layer of mucus
• Respiratory Troubles: The mucous membranes of the respiratory region are slightly moist to protect the respiratory tract from substances that might be present in inhaled air
• Acid-Alkaline Imbalance: Dehydration

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