Review Session Flashcards
What are the 6 types of Cell Adaptations?
- Atrophy
- Hypertrophy
- Hyperplasia
- Metaplasia
- Dysplasia
- Anaplasia
Decrease in size of tissue, organ, or entire body
Atrophy
Thymus undergoing involution
Physiologic Atrophy
Ovaries/Uterus/Breasts after menopause
Physiologic Atrophy
Bones and muscles in elderly become thin and prone to fx (osteoporosis)
Physiologic atrophy
Ischemic organs are small (Kidneys involved w/ atherosclerosis)
Pathologic Atrophy
What is the best example of pathologic atrophy?
Alzheimer Dementia
An increase in size of tissues or organs due to enlargement of individual cells.
Hypertrophy
Enlargement of skeletal muscles in body builders due to weights
Physiologic Hypertrophy
Enlargement of left ventricular muscle in heart due to HTN (and overall enlarged heart) due to increased workload
Pathologic Hypertrophy
An adaptive increase in the number of cells that can cause enlargement of tissues or organs. (cells are normal though, only # increases)
Hyperplasia
Polyps of the colon or stomach (benign)
Hyperplasia (hyperplastic polyps)
Growth of endometrium due to estrogens
Hyperplasia
Can hyperplasia and hypertrophy be seen together?
Yes
Give an example where hypertrophy and hyperplasia occur together, in a woman.
Physiologic hypertrophy of uterine smooth muscle cells during pregnancy is also accompanied by hyperplasia.