Respiratory images

Question 1

Identify this:

Answer 1

bronchus.

Note:

(E) Epithelium - pseudostratified ciliated

(LP) lamina propria - elastic rich,

(M) Muscle - discontinuous smooth muscle layer,

(S) submucosa – contains sero-mucinous glands,

(C) cartilage- flat plates

Question 2

Identify:

Answer 2

Bronchiole

Note: Airways of < 1 millimeter without cartilaginous support. Greatest cross-sectional area of all conducting passages in the lung. The epithelium is simple columnar and ciliated with fewer goblet cells than larger airways. (M) spiral smooth muscle layer, controls resistance to airflow

Question 3

What obstructive condition is represented by these slides?

Answer 3

Chronic bronchitis

Note: •Small airways (<2 mm) containing inflammatory cells •Airways containing lymphoid follicles •Thickening of the bronchiole wall •Luminal mucus plugging. Loss of cilia