Intro and Homeostasis Flashcards
Process of maintaining a relatively constant/stable internal environment (set point) in spite of changing external environments.
Homeostasis
Outside body is ___- environment
external environment
Inside body, outside cells is _____ environment
internal environment
Inside cells is _____ environment
intracellular environment
levels change over short periods of time but remain relatively constant over long periods of time.
dynamic constancy
Is homeostasis dynamic or static?
Dynamic
A _____ state requires energy input
steady state
When homeostasis is maintained, we refer to ______
physiology
when homeostasis is not maintained, we refer to ______
pathophysiology
Environment outside of the cell, Necessary for normal cell function; Local vs. Systemic
Extracellular fluid
Restricted to one tissue space; Utilizes Paracrines and Autocrines; Maintain Function of Tissue is _____ extracellular fluid
Local extracellular fluid
Involves entire body, Utilizes Nervous System and Endocrine system, Maintain Function of Heart and Brain is ____ extracellular fluid
Systemic extracellular fluid
Endocrine and Nervous system are considered _____ extracellular fluid homeostasis
Systemic
Paracrines and Autocrines are considered _____ extracellular fluid homeostasis
Local
Target cells in close proximity to site of release of ______ substance
paracrine
