Exam 1: Cell Adaptation Flashcards
When does cell adaptation occur?
when the cell homeostasis is distorted by stresses or pathologic stimuli
The ability to maintain internal equilibrium by adjusting its physiological processes
Homeostasis
A dec. in the size and or number of the cells and their activity after normal growth has been reached
Atrophy
T/F. Cells undergoing atrophy are dead?
F
What is the diff. between hypoplasia and atrophy
H: Never achieved full size
A: Dec. size due to dec. in cell number
Dec. in cell size
Hypoplasia
A dec. in the amt. of cells
Hypotrophy
An inc. in the size of cells and their functions
Hypertrophy
Where is hypertrophy commonly seen?
cells with little replication,
cardiomyocytes, neurons
Lack of development of an organ or tissue
Aplasia
What are the 2 types of hypertrophy and examples of each?
- Physiologic (prego uterus, weightlifter)
2. Pathologic (cardiac hypertrophy)
The inc. in the number of cells of an organ
Hyperplasia
Which type of cells do you typically see hyperplasia?
cells capable of replication
what are the 2 categories of physiologic hyperplasia
- Hormonal (mammary gland during prego)
2. Compensatory (Hepatectomy)
What is the most common cause of pathologic hyperplasia
excessive hormonal growth factor stimulation
