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neurone/ impulses

synapses, ap and reflex arc

QuestionAnswer
name three types of neurone relay, motor and sensory
layer of cells surrounding the axon schwann cells
gap between the schwann cells node of ranvier
dendron/dendrites moving towards cell body
axon moving away from cell body
what are surrounding the schwann cells wrapped around the axon layer of lipid secreted by schwann cell
motor neurones impulses sent from brain to the effector
sensory impulses sent from receptor to the brain
what is a reflex rapid, involuntary response to stimuli
bright light pupil constricts
dim light pupil dilates
receptor in pupil reflex arc photoreceptors
sensory nerve optic nerve
co-ordinated coordinating cells in the midbrain
motor nerve parasympathetic motor neurones
name the muscles in the eye circular radial
Name the ions present in the axon Na K
Which one goes out and which one goes bk in K in Na out
What else is present inside the axon negative inorganic substances
Which ion is the membrane impermeable to Na
why do Cl ions move in and out balance the charge differences
What type of response is action potential firing all or nothing response
What type of conduction is ap saltatory
refractory period time of gap between the action potentials
How is the summation intensity increases spatial-more than one neurone sends the impulse temporal-multiple action p sent very quickly
Name the gap between two neurones synaptic cleft
What are the names of the two membranes involved? presynaptic & post synaptic
What is contained inside the synaptic vesicles neurotransmitters
name a neurotransmitter acetylcholine
How is amount of acetyl choline maintained ATP from mitochondria cause acetyl and choline to recombine or synthesised from sER
What are the advantages of having a synapse one way system, weed out weaker impulses
Created by: 07blandforderin
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