Flashcards in Lecture 1-Homeostasis And Cell Function Deck (18):
Why is homeostasis important to physiological processes?
All life has certain parameters (Temp, BP, BGL, etc.) that must be maintained for continued survival physiologic processes work to keep these in check.
The "stable internal environment" of an organism.
A change to hemostasis produces an effect that reduces the change.
A change in homeostasis occurs, and the effector increases the degree of change.
Something that creates a change to the internal environment.
Most abundant extracellular cation
Most abundant intracellular ion
Most abundant extracellular anion
F(x)s of the plasma membrane:
- selectivity filter
- receptors tell about environment
Intracellular trafficking organelles
Organelle associated with ATP production
Transport compounds to the lysosome
Digests phagocytized material
Describe the process of endocytosis.
- molecule to be phagocytized binds to extracellular receptor
- clathrin coated pit forms
Invaginate so to become endosome
- fuses w/1* lysosome to form 2* lysosome
What is contained in lysosome?
Acidic hydrolases at low pH (p+ pump)
What is contained in peroxisomes?
Peroxide ions for degradation of pathogens via free-radical reactions
What Re the 3 major functions of the Golgi apparatus?
- package proteins for secretion
- form lysosomes
- modify proteins received from rough ER