Cell Injury Flashcards Preview

Anatomy and Physiology > Cell Injury > Flashcards

Flashcards in Cell Injury Deck (14):
1

What are three responses to cell stress?

Adaption, reversible injury, irreversible injury/cell death

2

How can a cell adapt to stress?

Increase cellular activity, decrease cellular activity, or alter cell type/position

3

What is the difference between labile, stable, and permanent cells?

Labile: Continuously dividing
Stable: Quiescent, can divide if needed
Permanent: Only develop in fetal life, damage is repaired but not replaced (Scarring)

4

What is hypertrophy?

Increase in cell/organ size to account for increased workload of permanent cells

5

What is the limiting factor of hypertrophy?

Nutrient/vascular supply through oxidative phosphorylation

6

What is hyperplasia?

Increase in cell numbers due to hormones/growth signals, can only occur in labile/stable cells

7

What is the name of hyperplasia that can cause pyometra in females?

Cystic endometrial hyperplasia

8

What are ischemia, hypoxia, and anoxia?

Ischemia: Lack of blood supply
Hypoxia: Decreased oxygen supply
Anoxia: Lack of oxygen supply

9

What can atrophy cause due to altered hormonal stimulation or apoptosis of individual cells?

Involution

10

What is meant by "acini?"

A circular structure lined by epithelial cells that secrete a substance

11

What can cause pathological atrophy?

Disuse, gradual/continuous injury, inadequate nutrient supply, decreased workload, denervation, pressure, loss of endocrine stimulation

12

What is cachexia?

Wasting of muscle tissue, weight loss, fatigue, weakness

13

What is emaciation?

Loss of muscle bulk due to starvation

14

What are some causes of serous atrophy of fat?

Malnutrition, malabsorption, starvation, chronic infection, neoplasia, parasitism