Homeostasis And Membrane Transport Flashcards
(35 cards)
Physiology focuses on
Mechanisms of action
Homeostatis
Maintenance of an internal stable enviroment
Two controls of homeostatic systems
Intrinsic
Extrinsic
Examples of positive and negative feedbacks
Positive/ blood clotting
Negative temperature regulation
Composition of protein
18%
Composition of mineral
7%
Composition of fat
15%
Composition of water
60%
Cytosol in
Intracellular fluid
ICF volume
28
ECF volume
14 litre
ECF of Na
142
ICF of Na
10
ECF of K
4
ICF of K
140
ECF of Cl
103
ICF of Cl
4
Does osmosis require energy
No
What is osmosis
Net movement of molecules from higher to lower concentration
Features of facilitated diffusion
Specificity
saturation
competition
Does not require energy
Example of facilitated diffusion
Glucose transport
Diffusion comes under
Passive transport
Active transport needs
Energy
Active Transport occurs against
Concentration gradient