Which of the following statements is true? a) The larynx is built mainly of smooth muscle. b) The epiglottis must be closed when speaking. c) The larynx lies below the oropharynx.... Which of the following statements is true? a) The larynx is built mainly of smooth muscle. b) The epiglottis must be closed when speaking. c) The larynx lies below the oropharynx. d) The largest pieces of cartilage in the larynx are the arytenoids. Fill in the blanks to complete the paragraph on the lining of the upper respiratory tract. The specialised lining of the upper respiratory tract is composed mainly of ________ cells with tiny hair-like structures called ________ on their free surface, which beat synchronously away from the ________. Carried by this beating action is a layer of mucus, produced by ________ cells within the lining. The function of the mucus is to trap ________ and prevent _________ of the deeper structures within the respiratory tract. This lining is found in the ________ but not in the __________________.
Understand the Problem
The question asks which statement among the options about the larynx is true and also requires filling in the blanks in a paragraph about the lining of the upper respiratory tract. This involves basic knowledge of human anatomy.
Answer
The larynx lies below the oropharynx. Fill with: epithelial, cilia, lungs, goblet, particles, infection, trachea, alveoli.
The true statement is: The larynx lies below the oropharynx. The paragraph should be filled as follows: The specialized lining of the upper respiratory tract is composed mainly of epithelial cells with tiny hair-like structures called cilia on their free surface, which beat synchronously away from the lungs. Carried by this beating action is a layer of mucus, produced by goblet cells within the lining. The function of the mucus is to trap particles and prevent infection of the deeper structures within the respiratory tract. This lining is found in the trachea but not in the alveoli.
Answer for screen readers
The true statement is: The larynx lies below the oropharynx. The paragraph should be filled as follows: The specialized lining of the upper respiratory tract is composed mainly of epithelial cells with tiny hair-like structures called cilia on their free surface, which beat synchronously away from the lungs. Carried by this beating action is a layer of mucus, produced by goblet cells within the lining. The function of the mucus is to trap particles and prevent infection of the deeper structures within the respiratory tract. This lining is found in the trachea but not in the alveoli.
More Information
The larynx is primarily composed of cartilage, not smooth muscle. The true statement (c) accurately describes its position relative to the oropharynx. The respiratory tract's lining is designed to protect against infection and maintain cleanliness.
Tips
Common mistakes include confusing different parts of the respiratory tract or misidentifying the components and functions of its lining.
Sources
- Anatomy, Head and Neck: Larynx - StatPearls - ncbi.nlm.nih.gov
- Larynx Anatomy - Medscape Reference - emedicine.medscape.com
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