Lab exam 1 Flashcards
passive transport
down the concentration gradient
active transport
up the concentration gradient
simple diffusion
no proteins
facilitated diffusion
proteins
flux
number of molecules that cross a membrane in a given time; refers to net movement
if your body gets hot
vasodilation
if your body gets cold
vasoconstriction
diffusional equilibrium
no net transfer because there is an equal likliehood for the molecule to go from one side to the other
factors affecting flux
- magnitude of driving force
- membrane surface are available for movement of molecules
- permeability
osmotic pressure
- total solute concentration of a solution
- driving force for water movement
- move concentration of solute leads to higher osmotic pressure
stimulus
increased body temperature
sensor
thermoreceptors
integrator
hypothalamus
effector
sweat glands are effectors, sweating is the effect
synergistic effectors
have same regulatory effects
antagonistic effectors
have opposite regulatory effects
integumentary system
protects the body from external environment
immune system
defend body against pathogens and abnormal cells
independent variable
x-axis
dependent variable
y-axis
