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lord [1]
3 years ago
12

Explain how the epithelium in each of the following regions of the respiratory tract is adapted so its structure follows its fun

ction.
a. Nasal cavity:
b. Bronchiole:
c. Alveolus:
Medicine
1 answer:
vovangra [49]3 years ago
8 0

Explanation:

a. Nasal cavity: the epithelium in this zone is meant to provide a physical barrier to the invasion of microorganism or particles, it also secretes and remove mucus and foreign particles, these epithelial cells are also involved in the igE producing process (perpetuating allergic responses. <em>The nose is the first barrier to the air that enters our body, that's why the epithelial cells in this zone focus in filtering foreign particles. </em>

b. Bronchiole: epithelium is ciliated and no ciliated, it becomes cuboidal in smaller passages as it continues to branch. The no ciliated cells, also known as club cells are the ones that produce surfactant. <em>Since bronchioles are passages to direct the air to the alveoles epithelial cells in this zone have adapted to go from larger branches to smaller ones to reach the alveoli. </em>

c. Alveolus: it's composed of two types of cells, type one, that constitute the air-blood barrier and type two, cells that produce surfactant to reduce surface tension to keep the alveolus shape when breathing.<em> Since alveoli's function is to allows oxygen/carbon dioxide to move between bloodstream the epithelial cells in this organ evolved to cover this job.</em>

I hope you find this information useful and interesting! good luck!

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Answer:

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Explanation:

From the question we are told that the daily allowance for infants and children is  8.00 × 10⁻⁶ mole of copper per kiogram of body weight.

Since this value is given in moles, we have to convert it to mass

Molar mass of a compound = mass in grams / no of moles of the compound.

So, Molar mass of copper = 63.546

No of moles of copper per kg = 8.00 × 10⁻⁶ mole

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Cross multiply

Mass of copper per kg body weight = 8.00 × 10⁻⁶ × 63.546

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Hence, the daily allowance of copper required for infants or children per kg of weight = 0.000508368 grams.

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If 1 kg per weight of an Infant = 0.000508368grams

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We cross multiply

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= 0.00508368 grams.

Therefore, the mass of copper required per day for a 10 kg child is 0.00508368 grams

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