Tracheobronchial Tree Flashcards Preview

Board Review: General Anatomy Respiratory Anatomy > Tracheobronchial Tree > Flashcards

Flashcards in Tracheobronchial Tree Deck (19):
1

Where does the trachea begin?

Lower border of cricoid cartilage (C6)

2

The trachea is a rigid fibrocartilage tube lined by what?

Pseudo-stratified ciliated columnar epithelium

3

The trachea is held open by what?

15-20 U shaped rings

4

What is the size of the trachea?

5 inches long
1 inch in diameter

5

Each ring is incomplete where?

Posteriorly linked by trachealis muscle

6

Where does the trachea end?

Sternal angle T4/5 by bifurcating into the R and L bronchi

7

There is a v-shaped cartilage that marks the bifurcation of the trachea called what?

Carina

8

What lies behind the trachea?

Esophagus

9

The 2nd to 4th tracheal rings are crossed anteriorly by what?

Isthmus of thyroid gland

10

How is the R bronchus different from L?

Shorter
Wider
More vertical

11

The L bronchus is what compared to R?

Longer
Narrower
More horizontal

12

Aspirated foreign bodies are more likely to go into where?

Middle lobe of R primary bronchus

13

The R main bronchus divides into what?

3 secondary bronchi

14

The L main bronchus divides into what?

2 secondary bronchi

15

Each lobar bronchus divides within each lobe into what?

Segmental bronchi

16

Each segmental bronchus feeds a what?

Bronchopulmonary Segment

17

The segmental bronchus continues to subdivide until it reaches what?

Terminal bronchiole

18

From the terminal bronchioles they lead to what?

Respiratory bronchioles

19

The respiratory bronchioles bear a number of what?

Alveolar sacs