Flashcards on Excitable cells, created by sophiakostich on 06/05/2013.
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Created by reynoldslaura
almost 11 years ago
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Copied by sophiakostich
almost 11 years ago
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What is the 'receptive field' of a sensory neuron?
What is intensity coding?
What is adaptation?
What are phasic receptors and give an example?
Give an example of a tonic receptor
According to the Nerst equation, what is the K⁺ equilibrium potential?
According to the Nerst equation, what is the equilibrium potential for Na⁺?
Is conductance faster in a wider or thinner axon and why?
Where are nodes of ranvier found?
Define accomodation.
What is a 'compound action potential '?
Where are action potentials generated from?
What is the extracellular volume chlorine in mm/L
Why can an action potential never be generated in an absolute refractory period despite massively increasing the stimulus?
Can an action potential be created in the relative refractory period?
How does tetrodoxin work as a poison?
What does tetraethylammonium (TEA⁺) do?
What is an excitable cell?
What are the three factors that affect membrane permeability?
What two things can affect the membrane potential?
Define depolarisation.
Why does hyperpolarisation occur in a normal action potential?
What is the intracellular concentration of chlorine (mm/l)
What is the extracellular volume of sodium in mm/L?
What is the intracellular volume of potassium in mm/L
What is the extracellular volume of potassium in mm/L?
What is the intracellular volume of sodium in mm/L
What is the Nerst equation used for?
What equation can we use to determine the resting potential of a cell?
In what three ways can neurotransmitters be removed from the synaptic cleft?
What enzymes break down noradrenaline?
Name two excitatory post- synaptic neurotransmitters.
Name two inhibitory post synaptic neurotransmitters
What happens with the generation of an inhibitory post-synaptic potential?
When can an action potential be fired with an inhibitory neurotransmitter?
Describe spatial summation.
Describe temporal summation.
What type of reflex is a stretch reflex?
Give an example of a polysynaptic reflex?
Where does the inhibitory pathway of a neuron always occur?
What happens in a stretch reflex?
Skeletal muscle is under what neuronal control?
Smooth muscle, cardiac muscle and glands are under what nervous control?
What receptors are found on the pre ganglionic nerve fibres in the parasympathetic division in the ANS?
What receptors are found on the post ganglionic nerve fibres in the parasympathetic nervous system in the ANS?
