AP Bio Systems Part 5 Flashcards
Sensory neurons
Picks up stimuli, and creates an impulse
How can you tell which type of neuron is which
By where the brain is
Interneurons
Located in brain
Central nervous system
Coordinate response after receiving signal from sensory neuron
Motor neurons
Carry out response, transmit impulse to an effector
Sodium potassium pump
Basic mechanism that receives neuron
Ready to fire
Allows membrane potential to be achieved
Constantly inputting energy
What causes the +/- on either side of the membrane
Net differences
What happens after a neuron fires
It gets reset
What is the resting potential
-70 milibolts (charge difference between outside and inside)
If you’re at -70, you have the ability to fire
What happens once the neuron reaches -50
Gates open, axon hillock opens up and it casts fire (reaches threshold)
What’s action potential and how long does it last
When the neurons actually fire
4 milliseconds
What is the resting droid post fre also known as
The absolute refractory period
The more stimuli, the
Stronger the fire
The nervous system senses
The internal and external environment
Degenerative disorders destroy what
The myelin sheath (demyelination of the neurons)
Synapse
Where one neuron comes in contact with another
What are released neurotransmitters triggered by and what are they picked up by
Triggered by neuron firing
Picked up by ligand gates ion channels
Then reaches the threshold on the next neuron
PRE AND POST SYNAPTIC NEURONS
K
Neurotransmitters can be what
Destroyed or reuptaken quickly
