Cell Injury Lab

Question 1

(3) Describe how stem cells are involved in metaplasia?

Answer 1

metaplasia is considered causing an altered pathway of differentiation for stem cells

Question 2

(4) Describe the features of fatty changes in the liver.

Answer 2

spherically empty space within the cytoplasm, lipid sometimes displace the nucleus

Question 3

(4) What are the most common causes of fatty change in livers

Answer 3

alcohol, malnutrition, obesity, toxic damage and intestinal bypasses

Question 4

(5) What are gross and microscopic features that can help to ID infarcted tissues?

Answer 4

grossly: pale= coagulative necrosis, darkly discolored = hemorrhagic infarct; scars appear white
microscopic: inflammation, neutrophilic infiltration, darker or loss of nucleies; scars made of collagen

Question 5

(6) What are the three main features of cirrhosis?

Answer 5

inflammation
fibrosis
lobular regeneration