Pulmonary Lobule Flashcards Preview

Anatomy Exam 1 > Pulmonary Lobule > Flashcards

Flashcards in Pulmonary Lobule Deck (12):
1

Passage of Air

Trachea -> Bronchial tree -> bronchi -> pulmonary lobule -> terminal bronchioles -> respiratory bronchioles -> alveolar ducts -> alveolar sacs -> Alveoli

2

Bronchi

Penetrate the apex of each pulmonary lobule
where rings of smooth muscle and hyaline cartilage on the outer walls hold it open bringing air in.

3

Smooth Muscle

Regulated the diameter of the passage ways
Excessive contraction will restrict the size of the airway

4

Terminal Bronchioles

Contain NO hyaline cartilage and branch further to form respiratory bronchioles

5

Respiratory bronchioles

Include the alveoli
Form multiple alveolar ducts which lead to alveolar sacs

6

Alveoli

Air filled cavities where gas exchange occurs

7

Alveolar sacs

Cluster alveoli

8

Gas exchange

Occurs at the respiratory bronchioles, alveolar ducts, alveolar sacs and alveoli
WHERE ALVEOLI ARE PRESENT

9

Pseudo-stratified ciliated columnar epithelium

Larynx down to the alveoli

10

Simple squamous epithelium

Alveoli
So thin that gas exchange happens

11

Pulmonary arteries

Bring deoxygenated blood from the right side of the heart to the lungs allowing carbon dioxide to diffuse into the alveoli to be exhaled

12

Pulmonary Veina

Contain oxygen molecules from alveoli