Homeostasis Lecture Flashcards
Define Functional Unit
The smallest part of something that demonstrates the most important properties
What is Hyperplasia?
Increasing the number of muscle fibers
What is Hypertrophy?
An increased size of a tissue or organ due to increased cell size rather than cell number
True or False: Differentiated cells form tissues and different tissues form organs that perform specific functions
True
What separates external and internal environments?
Epithelial Layer
What are epithelial cells attached to?
Basement membrane
What are endothelial cells?
Epithelial cells that surround blood vessels
What is in the ICF?
fluid inside the cells
What is plasma?
Fluid around blood cells
What is ISF?
fluid around all cells (plasma and ICF)
What is homeostasis?
The dynamic mechanisms that maintain physiological variables of the internal environment
True or False: Homeostasis only involves organ systems
Fasle; it can involve the organ systems or it can be local
What is a steady state
a constant state that requires energy to maintain
What is an equilibrium state?
constant state that doesn’t require energy to maintain
What is a negative feedback loop?
There is a deviation and a change will move it back to the desired value
