Pulmonary Lobule

Question 1

Passage of Air

Answer 1

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

Question 2

Bronchi

Answer 2

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.

Question 3

Smooth Muscle

Answer 3

Regulated the diameter of the passage ways

Excessive contraction will restrict the size of the airway

Question 4

Terminal Bronchioles

Answer 4

Contain NO hyaline cartilage and branch further to form respiratory bronchioles

Question 5

Respiratory bronchioles

Answer 5

Include the alveoli

Form multiple alveolar ducts which lead to alveolar sacs

Question 6

Alveoli

Answer 6

Air filled cavities where gas exchange occurs

Question 7

Alveolar sacs

Answer 7

Cluster alveoli

Question 8

Gas exchange

Answer 8

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

Question 9

Pseudo-stratified ciliated columnar epithelium

Answer 9

Larynx down to the alveoli

Question 10

Simple squamous epithelium

Answer 10

Alveoli

So thin that gas exchange happens

Question 11

Pulmonary arteries

Answer 11

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

Question 12

Pulmonary Veina

Answer 12

Contain oxygen molecules from alveoli