Smart Sparrow Prac 2: Inflammation and healing

Question 1

In acute inflamm (lobar pneumonia), what is filling the alveolar spaces, causing congestion?

Answer 1

Neutrophils, fibrin, oedema fluid and later, macrophages are the components of the exudate that fill the alveolar spaces

Question 2

Alveolar spaces that are full of exudate rather than air are referred to as ______.

Answer 2

Consolidated

Question 3

What is the significance of the cells indicated by the thick black arrows in this image of the lung?

Answer 3

The disease process causing the acute inflammation or the inflammatory response itself sometimes damages the capillaries or venules allowing red blood cells (thick black arrows) to escape into the tissues.

Question 4

In this micrograph of a lung, what feature is indicated by the black star?

Answer 4

neutrophils intermixed with fibrin (black star), seen as a meshwork of eosinophilic strands.

Question 5

Serosal layers (i.e. mesothelium and underlying connective tissue), when acutely inflamed, frequently develop a particular sub-type of acute inflammatory exudate on their surface….

Which specific type of acute inflammatory exudate is this and what is its predominant component?

Answer 5

Fibrinous exudate; fibrin.