Choose ONE of the Critical Thinking Questions from CHAPTER 5 to answer. Find and cite a credible resource to support your answers or supplement your thoughts. Page 170) .

1. The amount of dust that collects in a house with an assortment of dogs, cats, and people is truly amazing. A lot of these dust particles had a previous “life” as part of the home’s living occupants. Where did the dust originate on the human body?

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2. Josie reassures her mother that the tattoo she received at the tattoo parlor will eventually disappear. She knows this because she has learned in biology class that skin cells are shed every four weeks. Is Josie correct?

3. Six months ago, Chef Eduardo sliced through the end of his right thumbnail. Although the surrounding nail grows normally, this part of his nail remains split and doesn’t seem to want to “heal.” What has happened to cause this?






Choose ONE of the Critical Thinking questions to answer. Find and cite a credible resource to support your answers or supplement your thoughts. ch 6

Taryn is a high school senior who is undergoing a strenuous running regimen for several hours a day in order to qualify for her sate high school track meet. Lately she has experienced intense pain in her right leg that is hindering her workouts. Her physical performs an examination of her right leg. The doctor doesn’t noticed any outward evidence of injury, he then orders a bone scan. What does her doctor suspect the problem is?
While playing basketball, nine-year old Marcus fell and broke his left arm. The arm was placed in a cast and appeared to heal normally. As an adult, Marcus was puzzled because it seemed his right arm was longer than his left arm. He measured both arms and was correct. How would you explain to Marcus what happened?
Astronauts in space exercise as part of their daily routine, yet they still have problems with bone weakness after prolonged stays in space. Why does this happen?

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