Question

What keeps the airways clear?

A. Spiracles near airway openings.

B. Pleural fluid in the thoracic cavity.

C. Mucin secreted by goblet cells in the bronchus.

D. Passage through squamous epithelial cells.


abc or d with a simple explanation

pls be sure of ur answer

Answer 1

What keeps the airways clear are the Spirals near the airway openings.

• A. Spirals near airway openings.

What keeps your airways open?

The walls of the trachea (TRAY-kee-uh) are reinforced by rigid rings of cartilage to keep it open. The trachea is also lined with cilia, which sweep fluid and foreign particles out of the airways so they stay out of the lungs.

What is trachea?

The trachea, also known as the windpipe, is a cartilaginous tube that connects the larynx to the bronchi of the lungs, allowing the passage of air, and so is present in almost all air-breathing animals with lungs. The trachea extends from the larynx and branches into the two primary bronchi. At the top of the trachea the cricoid cartilage attaches it to the larynx. The trachea is formed by a number of horseshoe-shaped rings, joined together vertically by overlying ligaments, and by the trachealis muscle at their ends. The epiglottis closes the opening to the larynx during swallowing.

With this information, we can conclude that With this information, we can conclude that the correct answer is A. Spirals near airway openings

Learn more about airway in brainly.com/question/13874056

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