Respiratory. Olfactory A RE: Respiratory epithelium L: Lymphatic tissue A: Bipolar neurons.

Respiratory

Olfactory

A

RE: Respiratory epithelium

L: Lymphatic tissue

A: Bipolar neurons.

Larynx

A

B

C

A: Pseudostratified ciliated columnar epithelium.

B: Submucosal glands.

C: Laryngeal cartilage.

B

C

A

A

B

C

Trachea

B

A

A: Tracheal gland

B: Respiratory epithelium

C: C– ring

A

B

C

A

B

C

Bronchi

B

A

A

C

A: Cartilaginous plates

B: Respiratory epithelium

C: Alveoli-

Bronchiole &Alveoli

B

A

C

D

A: Terminal bronchiole

B: Bronchiole

C: Alveoli

D: Dust cells

Alveoli