Concept explainers
Which respiratory structures are lined with respiratory mucosa? List the functions of this mucous membrane.
To review:
The respiratory structures lined by the respiratory mucosa, and the function of this membrane.
Introduction:
There are various membranes that covers the different structures of the body. The exterior portion of the body is covered by the skin. Various visceral organs and the internal body cavities are lined by the mucous membrane or mucosa. The mucosa serves different functions at various locations.
Explanation of Solution
The respiratory mucosa has pseudostratified columnar epithelial cells, also called goblet cells because of their appearance. It also has a supporting connective tissue called lamina propria, which hosts mucous and serous cells in the tubuloalveolar glands. The nasopharynx is the upper respiratory tract, and has two types of mucosa namely the olfactory and respiratory mucosa. The pharynx, larynx, trachea and bronchial trees are all lined with respiratory mucosa.
There are various functions performed by the respiratory mucosa some of which are listed below:
1. Mucous filters the inhaled air throughout the structures of the respiratory passageway.
2. The mucous cells produce mucus that has lysozyme which destroys the bacteria entering with air.
3. The mucus produces a continuous sheet that traps pollen, dust, debris, and bacteria.
4. The inhaled air is moistened by the respiratory mucus.
Want to see more full solutions like this?
Chapter 22 Solutions
Human Anatomy
- Compare the types of epithelial lining the (i)trachea and (ii)alveoli taking in account their main morphological and functional characteristics.arrow_forwardWhat is the function of the mucous lining of the epithelium inthe respiratory tract?arrow_forwardWhy are there cartilages lining parts of the respiratory tract? If support is needed, why aren’t thesecartilages complete encircling the segments in which they are found?arrow_forward
- Identify the epithelium lining a (any) component of the respiratory zone of the respiratory tract 1. simple squamous epithelium 2. simple cuboidal (ciliated) epithelium 3. simple columnar (ciliated) epithelium 4. pseudostratified columnar (ciliated) epithelium 5. stratified squamous epithelium Choose the following: (A) 1, 2, and 3 (B) 1 and 2 (C) 4 and 5 (D) 2, 3, and 4 (E) 3, 4, and 5arrow_forwardWhat is the effect of cigarette smoking to the lining epithelium of the respiratory tract?arrow_forwardWhat is the function of the apical modification (cilia) found on the lining epithelium of the respiratory tree? What is the function of goblet cells found along the lining epithelium of the respiratory tract?arrow_forward
- What are the passageways leading from the nose to where oxygen can be absorbed into the blood stream? Explain how both diffusion and convection are necessary to deliver oxygen from the nasal cavity to the cells of the body.arrow_forwarda)Draw a flow chart or diagram to illustrate how oxygen would move from the air into the body cells and how carbon dioxide would be removed. b)What is the end result of cellular respiration and why is this important in the body?arrow_forwardWhere are exchange epithelial cells found? What did the alveoli look like on the slide, and why is their structure important? Do these cells have tight junctions? Explain why.arrow_forward
- Describe the structure of the mucosa that lines the respiratory tract and the structural changes observed along its length.arrow_forwardPredict what you think might happen if the respiratory membrane were instead composed of two layer of stratified squamous epithelium. Explain.arrow_forwardAs the diameters of the respiratory airways decrease, which of the following is observed? a) There is an increase in cartilage support O b) Pseudostratified columnar epithelium becomes simple cuboidal epithelial linings O c) The epithelium becomes more ciliated d) There are less mucus secreting goblet cells in the epithelial liningarrow_forward
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage LearningBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning