chapter 37 connect Flashcards
dentrite
the part of the neuron that sends signals toward the cell body
in myelinated axons, gated channels only open at nodes of Ranvier resulting in what conduction?
saltatory
3 main parts of a neuron
axon, cell body, and dentrite
learning
the usage of memories demonstrates that this has happened
most drugs available to Alzheimer disease (AD) work by
increasing acetylcholine
components of the peripheral nervous system
ganglia and nerves
axon
the elongated portion of the neuron that conducts nerve impulses
describe an ischemic stroke
blood supply to the brain that is disrupted
nervous system includes which main parts
the brain and the spinal cord
components of autonomic sytme divisions
sympathetic and parasympathetic
frontal
motor control and reasoning
parietal
sensory reception
temporal
auditory input
occipital
visual information
repolarization
happens after an action potential occurs, the membrane potential across a neuron cell membrane returns to -70 mV.
synapse
the area where a presynaptic neuron comes into close proximity with a photosynthetic neuron
motor (efferent) neuron
a nerve cell that carries impulses away from the central nervous system
ependymal cells
a type of neuroglia that surrounds the ventricles of the brain, where they produce cerebrospinal fluid
what is surrounded by meninges
brain and spinal cord
norepinephrine
dreaming and mood
dopamine
emotions and learning
serotonin
thermoreguialtion and sleeping
acetylcholine
excites skeletal muscle
refractory period
a nerve impulse travels one way down and axon due to the sodium channels being open during this period
nodes of Ranvier
gaps in the myelin sheath
components of invertebrates nervous system
ganglia, ventral nerve cord, brain
dorsal root ganglion
the mass of sensory neuron cell bodies located in the dorsal root of a spinal nerve
