Anatomy of the Lung

Question 1

What are the two different blood supplies of the lungs?

Answer 1

Pulmonary and bronchial circulation.

Question 2

What does the pulmonary circuit do?

Answer 2

Supplies the respiratory tissues (parenchyma) with deoxygenated blood.

Question 3

What does the bronchial circuit do?

Answer 3

Nourish the non-respiratory tissues with oxygenated blood.

Question 4

How many lobes does the right lung have and what are they?

Answer 4

3; Superior, middle, and inferior lobes.

Question 5

Which additional fissure does the right lung have that the left lung does not?

Answer 5

Horizontal fissure

Question 6

What fissure do both the right and left lungs have?

Answer 6

Oblique fissure

Question 7

How many lobes does the left lung have and what are they?

Answer 7

2; Superior and Inferior lobes.

Question 8

What is the cardiac notch and what lung is it distinctive too?

Answer 8

It’s an indentation on the left lung, where the heart sits.

Question 9

What is the lingula, and what lung can it found on?

Answer 9

An extension of the left superior lobe into the left costomediastinal recess.

Question 10

What are the conducting airways of the respiratory system?

Answer 10

Trachea, primary bronchi, secondary bronchi, and tertiary bronchi.

Question 11

Begins at the cricoid cartilage and descends in the thorax, where it bifurcates into right and left primary bronchi at the T4-T5 vertebral level.

Answer 11

Trachea

Question 12

Consists of C-shaped rings of hyaline cartilage closed posteriorly by the trachealis muscles.

Answer 12

Tracheal wall

Question 13

The internal ridge of the tracheal bifurcation into primary bronchi.

Answer 13

Carina

Question 14

Divides into superior, middle, and inferior secondary bronchi.

Answer 14

Right primary bronchus

Question 15

Which bronchus is shorter and wider the left or the right?

Answer 15

Right bronchus

Question 16

Which bronchus is more horizontal the left or right?

Answer 16

Left bronchus

Question 17

Which vein arches over the right primary bronchus prior to entering the superior vena cava?

Answer 17

Azygos vein

Question 18

Divides into superior and inferior secondary bronchi.

Answer 18

Left primary bronchus

Question 19

What artery arches over the left primary bronchus?

Answer 19

Pulmonary artery

Question 20

Each secondary bronchus further divides into __________, which continue to divide.

Answer 20

Tertiary bronchi

Question 21

The smallest bronchi give rise to _________, which terminate into __________ where the exchange of gases occur.

Answer 21

Bronchioles, and alveolar sacs.

Question 22

The medial concave surface containing the hilum (root) of the lungs related to the pericardium and heart.

Answer 22

Mediastinal lung surface

Question 23

The base of the lungs is curved because it rests on the domed diaphragm.

Answer 23

Diaphragmatic lung surface

Question 24

This area projects into the root of the neck and is crossed anteriorly by the subclavian artery and vein.

Answer 24

Apex of the lung