
RESPIRATORY SYSTEM
Authored by SITI RADIN
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University
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13 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What is cell type forms the lining of the alveoli?
Answer explanation
The alveoli are lined with a single layer of squamous epithelial cells, which allow for easy diffusion of vital gases. Basal and apical cells refer to cells located at the bottom and top of structures, respectively. Endothelial cells line the circulatory system and blood vessels. There is no formal class of cells known as "respiratory cells."
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What type of epithelial tissue surrounds the alveoli?
Answer explanation
Alveoli are the site of gas exchange in the lungs. Because rapid diffusion of gases is necessary between the capillaries and the alveoli, a very thin epithelial layer is needed. As a result, alveoli use simple squamous epithelium so that gases can easily diffuses to and from the bloodstream.
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What are the structures is found within the lungs and helps facilitate gas exchange?
Answer explanation
Alveoli are at the end of the respiratory pathway in humans, and act as a site of gas exchange
(carbon dioxide and oxygen).The path of air through the respiratory tract is: trachea, bronchi, bronchioles, alveoli. It is important to note that no gas exchange takes place in the bronchi, but does in the bronchioles, which are passageways that branch off from the main bronchi and eventually lead to alveolar ducts.
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
How many lobes does the right lung have?
Answer explanation
The right lung contains three lobes: upper, middle, and lower. The left lungs contains two lobes: upper and lower. The left lung is designed to be smaller than the right in order to accommodate the heart, which is situated slightly to the left.
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
How is oxygen carried after entering the blood of the pulmonary capillaries?
Answer explanation
Hemoglobin is the main oxygen carrier in the human body. Each hemoglobin protein is able to carry four oxygen molecules. As the hemoglobin travels through the blood vessels of the body, the oxygen is released to tissues and used in the electron transport chain.
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What happens to the pressure of the lungs to initiate inspiration?
Answer explanation
During inspiration, the lungs expand as the diaphragm contracts and internal intercostal muscles relax. As the volume of the thoracic cavity increases, its pressure decreases. This creates a pressure gradient, driving air from an area of high pressure (the environment) into the area of low pressure (the lungs).
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
What structural component(s) of the airway would be most affected by the bronchodilator to induce smooth muscle relaxation and in what functional zones are they found?
Answer explanation
The conducting zone is simply a series of tubes through which gases travel while the respiratory zone directly participates in gases exchange.
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