Respiratory Anatomy: Lower respiratory tract

Question 1

At what cervical cartilage vertebra is cricoid cartilage found

Answer 1

at C6 level

Question 2

20. What cervical cartilage vertebra does the trachea begin

Answer 2

at C7 level, below the cricoid cartilage

Question 3

21. At what thoracic vertebra level does the trachea bifurcate into the right and left main bronchi and therefore what level is the carina found?

Answer 3

at T4/T5

Question 4

22. Outline the anatomy of the lower respiratory tract from trachea to segmental bronchi

Answer 4

1. Trachea
2. Carina
3. Main bronchi (primary)
4. Lobar bronchi (secondary)
5. Segmental bronchi (tertiary)

Question 5

24. Outline the respiratory portion of the respiratory tract starting with the bronchi and ending with the capillary network on aleveolar sacs

Answer 5

1. Bronchi continue to branch
2. bronchioles
3. eventually lead to Terminal bronchioles
4. respiratory bronchioles
5. alveolar sacs
6. capillary network on alveolar sacs

Question 6

25. What is the alveolar sac surrounded by?

Answer 6

capillary network