Homeostasis Flashcards
What is homeostasis?
All body systems work together to maintain a stable environment
Systems responding to external and internal changes to function within a normal range (body temp, fluid balance). This is called
Homeostasis
What happens to the body when the normal homeostatic mechanisms breakdown?
Organ systems can become less efficient or even fail. This can result in diseases
Why are changes in the cell’s homeostatic mechanisms so important?
It is the key to understanding disease processes
What is homeostasis in an organism regulated by?
secreted proteins and small molecules often functioning as signals.
What is homeostasis MAINTAINED by?
Regulation and by the exchange of materials and energy with its surroundings
Name the two organelles critical in maintaining homeostasis
mitochondrion and plasma membrane
Name the function of the mitochindrion
-the site of cellular respiration and energy
production
- producer of reactive oxygen species which can react with other components of the cell
Describe the structure of the mitochondrion and what it consists of
-a double membrane structure
-consists
of an:
Outer membrane
Outer membrane space
Inner membrane (cristae)
Matrix
Each part of the mitochondrion has a role in
cellular respiration
How is ATP produced?
Through cellular respiration
What is cellular respiration
an oxidation and reduction reaction
Glucose is oxidized to
CO2
Oxygen is reduced to
water
The energy released is captured by
ATP
