Final Exam Flashcards
Neuron
Transmits and recives electric signals main unit in nervous system
Filtrate
The waste and excess filtrated out of blood to be peed out
Filtration
The stages of removal of waste
Resting potential
Body when no neurotrasmitiond are being made at -70mv
Threshold potential
This is when we are in an all or nothiny response generating are max -40mv membrane becomes more positive
Refractory period
Time in between electrical signals that other signals can’t be sent
Synapse
Junction between a neuron and another cell like muscle cell
Repolirization
K+ gates open and they rush out to make the membrane more negative again
Hyperpolirization
Too much K+ leaves membrane making it too negative
Returning to resting potential
The sodium potassium pump takes care of this
Axon
Long extension of neuron that transmits electrical currents across our body
Sympathetic system
Preparing for stress
Parasympathetic system
Recovering from stress
Photo systems
Capture light energy and turn it into chemical
Ps700 and ps680
Thylakoid
Found in chloroplasts play a role in light dependent reactions as they form adp and atp
Pigments
Chlorophyll absorb light and will reflect a different colour depending on the plant this is what makes plants green.
Light reaction steps
Happens in the Thylakoid. Light will be absorbed. Water in the plant will get split keeping H in and releasing oxygen. ETC pumps H+ along the membrane causing a proton gradient and chemiosmosis uses the flow of protons to create atp and electrons will make NADPH
Where does Calvin cycle occur
Happens in the chloroplasts
What happens in the Calvin cycle
CO2 attaches to a enzyme called rubisco and from here many stages occur creating glucose.
Things that affect the rate of photosynthesis
Heat, humidity, light intensity, oxygen /CO2 concentrations,
What does co2 attach to in c3
Rubisco
What does co2 attach to in C4
4 carbon molecule so it can be taken to rubisco to elevate co2 levels
What does co2 attach to in cam plants
It gets turned into a organic acid that will release co2 when it is brought to the Calvin cycle.
How does urinary system maintain Bp and PH
It maintains by making vasoconstrictors when BP needs to be elevated and it maintains ph by creating aldosterone to be used to reabsorb solutes
What is a negative feedback loop
Our body counteracting what is being done to return it to à homeostatic state such as when we get too hot it makes us sweat
What is a positve feedback loop
It enhances the stimulus like in childbirth the Child stimulates a hormone that helps with contractions and the feedback loop will enhance it to make more contractions
