Exercise 39 B. Matching 1. Match each structure listed on the left with its corr
ID: 3515543 • Letter: E
Question
Exercise 39 B. Matching 1. Match each structure listed on the left with its correct description on the right. 1. C-shaped rings voice box 2. internal nares elastic cartilage flap of larynx 3. cricoid cartilage 4. pleurae 5. epiglottis 6. glottis 7. vocal fold C. serous membrane of lungs left lung E. connects nasal cavity with throat F. tracheal cartilage G vocal cord 8. cardiac notch rotects vocal fold 9. external nares 10. three lobes 11. thyroid cartilage I. nostrils J. base of larynx K. right lung 12. vestibular fold Ad's apple C. Short-Answer Questions 1. List the components of the upper and lower respiratory systems.Explanation / Answer
1. C- shaped rings occur in trachea. These cartilagenous rings support the hollow respiratory passageways. The statement matches with tracheal cartilage (F).
2. The air entering nose travels through nostrils or nares. The external nares are connected with internal nares. The internal nares are open into nasopharynx. So, internal nares connect nasal cavity with throat. The statement matches with option (E).
3. Larynx or voice box contains shield shaped thyroid cartilage. This is hyaline cartilage and below this or at base of larynx is the site of cricoid cartilage and it is complete ring of cartilage allowing opening or closing of airway during speech. The statement matches with option (J).
4. Pleurae are the serous membranes that enclose lungs. These are 2 layers parietal pleura and visceral pleura. The space between the two layers is intrapleural space filled with pleura fluid that reduces the friction during expansion and contraction of lungs. The given statement matches with option (C).
5. Epiglottis is the spoon shaped flap of elastic cartilage in larynx. It protects the superior opening of larynx. it allows the passage of air into lower respiratory tract organs and prevents food entering airway during swallowing. The given statement matches with option (B).
6. Glottis is a slit like passage between the vocal folds and allows air and protects them. The given statement matches with option (H).
7. Vocal folds are part of mucous membrane of laynx that undergo folding forming true vocal cords. The given statement matches with option (G).
8. Cardiac notch is the lateral deflection of anterior boarder left lung. It accomodates the space for heart. The given statement matches with option (D).
9. External nares are the nostrils through which the air enters the nasal cavity. The given statement matches with option (I).
10. Right lung is divided into upper , middle and lower lobes. The given statement matches with option (K).
11. Thyroid cartilage of larynx protrudes anteriorly and is called Adam's apple. The given statement matches with option (L).
12. Vestibular fold is thick mucous membranes' folds that enclose narrow fibrous band of tissue. The vestibular liganent is attched infront of thyroid cartilage and belo epiglottis. It is found in larynx or voice box. The given statement matches with option (A).
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