1. When the body depletes its salt and water supplies, sweating stops and heat loss by evaporation of sweat is blocked. 2. Mark has lost a great deal of his electrolytes through sweating earlier in the day containing sodium, potassium, calcium, chloride and bicarbonate. All aid in the ability for the body to maintain homeostasis and muscle control. 3. During a heat stroke, your body is unable to properly cool itself. When it is unable to cool itself, the core body temperature rises rapidly.When the core temperature rises, the brain begins to fail. (The brain can only function in a very narrow temperature range). As the brain overheats, the individual will become disoriented, combative, argumentative and may hallucinate. 4. Due to the growth, change of color and bleeding these are all first signs of melanoma. He should have them looked at by the dermatologist. The Dr. will more than likely take a biopsy of the mole. All potentially cancerous skin growths must be biopsied to confirm acancer diagnosis. Depending on the suspected type of skin cancer, the biopsy techniques vary slightly but crucially.
Any potential melanoma requires a surgical biopsy, in which the entire growth is removed with a scalpel if possible. A pathologist then studies the sample under a microscope to determine whether cancer cells are present. If melanoma is diagnosed, other tests may be ordered to assess the degree of cancer spread (metastasis). They include: Imaging. Your doctor will order one or more tests to look for metastasis. They include CT scan, MRI, PET scan, bone scan, and chest X-ray. Other biopsies. Using a variety of techniques, your doctor may want to get tissue samples from lymph nodes. Skin growths that are most likely basal cell carcinoma, squamous cell carcinoma, or other forms of nonmelanoma can be biopsied in various ways. Part or all of the growth can be taken with a scalpel for examination under a microscope. 5. Heat Stroke- a disturbance of the temperature regulating mechanisms of the body caused by overexposure to excessive heat, resulting in fever, hot and dry skin, and rapid pulse, sometimes progressing to delirium and coma.
First Degree Burns- First-degree burns cause minimal skin damage. They are also called “superficial burns” because they affect the outermost layer of skin. Signs of a first-degree burn include: redness, minor inflammation (swelling), pain, dry, peeling skin (occurs as the burn heals)
Electrolytes
any of certain inorganic compounds, mainly sodium,potassium, magnesium, calcium, chloride, and bicarbonate, thatdissociate in biological fluids into ions capable of conducting electricalcurrents and constituting a major force in controlling fluid balance within the body.
Glucose- also known as dextrose or grape sugar) is a simple aldosic monosaccharide found in plants. It is a monosaccharide that is absorbed directly into the bloodstream during digestion. It is an important carbohydrate in biology, which is indicated by the fact that cells use it as a secondary source of energy and a metabolic intermediate. Glucose is one of the main products of photosynthesis and fuels for cellular respiration.
Melanin- The pigment that gives human skin, hair, and eyes their color. Dark-skinned people have more melanin in their skin than light-skinned people have. Melanin is produced by cells called melanocytes. It provides some protection again skin damage from the sun, and the melanocytes increase their production of melanin in response to sun exposure. Freckles, which occur in people of all races, are small, concentrated areas of increased melanin production.
6.The average human has about 41 liters of water in their body. So loosing 4 liters is roughly 9% of the total volume of water throughout the body. I would assume the kidneys would decrease the urine output as to conserve water loss.
7. With dehydration, the pulse rate may increase and the blood pressure may drop because the blood is depleted of fluid. When there is not enough fluid in the circulatory system the blood pressure will drop and the pulse may increase as a direct result of the heart trying to pumps fluid throughout the body. Dizziness and disorientation is also another common side effect of low blood pressure as the body is not used feeling this way and the amount of normal blood and fluids is being deprived from the brain causing it overheat.
8.It would not a good idea what so ever as alcohol is a dieuretic a diuretic is any substance that promotes the production of urine. This includes forced diuresis. There are several categories of diuretics. All diuretics increase the excretion of water from bodies.
9.Mark would have greater amounts of Vitamin D is his system. Vitamin D is produced by our skin in response to exposure to ultraviolet radiation from the sun. In fact, this is such an efficient system that most of us make 20,000 units of vitamin D after only 20 minutes of summer sun without suntan lotion.
10.Marks chances of burns increased with the removal of his hat and shirt.
Unit 2 Case Study Answer SUBMISSION!!: Lost in the Desert!
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Table of Contents

Part 1 of 1 - | Question 1 of 11 | 2.0 Points |
Given the conditions, what should Henry do to try to save Mark? He must decide very quickly.
Mark has very little time left and may not survive the trip by helicopter to the hospital. Gather into your groups and use your textbooks as resources to gather for information about what
Henry should do.

What has caused Mark’s weakness, nausea, disorientation, headache, and low blood pressure?

Why isn’t he sweating? | Question 2 of 11 | 1.0 Points |
Why didn’t the paramedic give Mark distilled water rather than an electrolyte/glucose solution? | | Question 3 of 11 | 2.0 Points |
Why did Mark become disoriented? How would you test your ideas to see if you are right? What do you think based on the information in the text? | | Question 4 of 11 | 2.0 Points |
What should Mark be concerned with regarding these moles? He talked to dermatologist Dr.
Charles Culp about the moles. What tests might Dr. Culp conduct after removing the moles? | | Question 5 of 11 | 2.0 Points |
Define the terms in the case study highlighted in boldface. | | Question 6 of 11 | 2.0 Points |
Assuming that Mark lost around 4 liters of water, what percentage of his body water did he lose?
Would you expect his urinary volume to decrease or increase during his trek? Please explain your answer. | | Question 7 of 11 | 2.0 Points |
Why was Mark’s blood pressure so low? Would his pulse rate decrease or increase? Please explain. Why was Mark dizzy and disoriented? | Question 8 of 11 | 2.0 Points |
Assume that Mark had an unopened six-pack of beer in his car. Would it have been a good idea for Mark to bring the beer along in case he got thirsty? Why or why not? | | Question 9 of 11 | 2.0 Points |
What vitamin would Mark have in greater amounts in his body after that day? | | Question 10 of 11 | 1.0 Points |
What did Mark do that increased his chance of burns? | | Question 11 of 11 | 2.0 Points |
Why would Mark’s skin have looked red within the first few hours of his adventure rather than redness developing hours and days later as a result of “sunburn”? | | |