Question 1

Explain why the rate of dehydration is greater when a person is immersed in seawater than when in fresh water.

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Question 2

Why is scab formation important in wound healing?

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Question 3

In a condition known as sunstroke,the victim appears flushed,the skin is warm and dry,and the body temperature rises dramatically.Explain these observations based on what you know concerning the role of the skin in thermoregulation.

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Question 4

A new mother notices that her 6-month-old infant has a yellow-orange complexion.Fearful that the child may have jaundice,she takes him to her pediatrician.After examining the child and learning about the infant's diet,the pediatrician declares him perfectly healthy and advises the mother to watch the child's diet.What is likely the cause for the change in skin color?

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Question 5

Vanessa's 80-year-old grandmother sets her thermostat at 26°C (80°F)and wears a sweater on balmy spring days.When asked why,the grandmother says she feels cold.What is a possible cause for her feeling cold?

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Question 6

If epithelial cell migration cannot cover a wound,________ may be required.

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Question 7

Why is regional infection or inflammation of the skin usually very painful?

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Question 8

A bacterial infection that is often fatal in burn patients is called ________.

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Question 9

Explain why warm,dry climates feel cooler than warm,humid climates,even though the air temperatures are the same.

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Question 10

Why is a subcutaneous injection with a hypodermic needle a useful method of administering drugs?

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Question 11

Many medications can be administered transdermally by applying patches that contain the medication to the surface of the skin.These patches can be attached anywhere on the skin except the palms of the hands and the soles of the feet.Why?

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Quiz 5: The Integumentary System