rapid response to stimuli via electrical signals
long-term response using chemical signals (hormones)
detects environmental stimulus
receives and processes signals
cells respond to regulatory signals
primary mechanism of homeostasis. Used to produce opposite effect of the change and bring back to homeostasis.
increases the effects of change produced by environmental stimulus. Does not bring back to homeostasis.
Conduction, Convection, Radiation, Evaporation
thermoreceptors of peripheral nervous system detect increased temp
hypothalamus signals CNS via motor nerves to sweat glands
sweat glands initiate sweating, blood vessels dilate
thermoreceptors signal hypothalamus using sensory neurons
hypothalamus sends message via motor neurons
arterioles and smooth muscle of skin contract, captures heat, skeletal muscles contract- shivering
water from high conc. to low conc.
regulating osmotic pressure of bodily fluids and cells, management of bodies water and solute content
composition of bodily fluids. regulation of blood pH, volume, and pressure. Excretion of metabolic waste.
released when liver breaks down proteins - by deamination. Very soluble and toxic. Must be diluted w/ H2O
product of Ammonia and CO2. Conversion occurs in liver. Low toxicity.
product of nucleic acid breakdown. Released through liver metabolism. Non toxic and insoluble in H2O