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1. Why are the cartilage rings in the trachea C-shaped? allows the esophagus to

ID: 207111 • Letter: 1

Question

1. Why are the cartilage rings in the trachea C-shaped?

allows the esophagus to bulge into the trachea so food can be swallowed

prevents the esophagus from bulging into the trachea so food can be swallowed

allows breathing when swallowing

prevents breathing during swallowing

2. Match the following respiratory structures in the correct order that air goes through as it travels from the nose to the alveolus

primary bronchi

1.

pharynx

2

tertiary bronchi

3.

secondary bronchi

4.

terminal bronchioles

5.

trachea

6.

glottis

7.

nasal cavity

8.

larynx

9.

respiratory bronchioles

10.

alveoli

11.

1. Why are the cartilage rings in the trachea C-shaped?

Selected Answer: Answers:

allows the esophagus to bulge into the trachea so food can be swallowed

prevents the esophagus from bulging into the trachea so food can be swallowed

allows breathing when swallowing

prevents breathing during swallowing

2. Match the following respiratory structures in the correct order that air goes through as it travels from the nose to the alveolus

Answers Selected Answer

primary bronchi

1.

pharynx

2

tertiary bronchi

3.

secondary bronchi

4.

terminal bronchioles

5.

trachea

6.

glottis

7.

nasal cavity

8.

larynx

9.

respiratory bronchioles

10.

alveoli

11.

Explanation / Answer

1. allows the esophagus to bulge into the trachea so food can be swallowed.

Cartilagenous rings are C shaped and incomplete to allow trachea to collapse slightly so that esophagus can bulge into trachea to allow swallowing of food.

2.

1. Nasal cavity.

2. Pharynx.

3. Glottis.

4. Larynx.

5. Trachea.

6. Primary bronchi.

7. Secondary bronchi.

8. Tertiary bronchi.

9. Terminal bronchioles.

10. Respiratory bronchioles.

11. Alveoli.