This is true I learned that last semester
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!
Answer:
The correct answer is a. True
Explanation:
The resting heart rate for a normal adult is between 50 to 90 beats per minute. Resting heartbeat below 50 is possible in persons who are very good athletes. A more cardiovascular fitness is seen in good athlete and they can have a resting heart rate near to 40.
If a normal resting heart rate falls from 60 that condition is known as bradycardia. Mostly old people are more prone to it. Tachycardia is a medical condition in which a person's resting heartbeat reaches above 100.
Both the condition bradycardia and tachycardia shows the problem related to heart and require medical attention.
