The Nervous System
temporal lobe
auditory lobe (red part in pic)
frontal lobe
controls your personality, intellect, our ability to communicate, and creativity
Which part of the neuron has receptor proteins attached to the cell membrane?
dendrites
what is the purpose for most reflexes?
they protect people from potentially harmful events or injury
T/F axons carry impulses AWAY from the neuron
true
T/F sneezing is reflux that involves the medulla
true
Which structure in a neuron stores chemical signal molecules?
vesicle
What is the advantage to having relatively few neurons in a reflex arc pathway?
with fewer neurons, the reflex happens more rapidly b/c there are fewer synapes
what is the effector in the reflex that allows you to automatically move your hand away from a hot stove
a muscle in the arm
Which part of a neuron conducts electrical impulses over long distances?
axon
Which part of a neuron sends chemical signals to other neurons?
axon terminal
in the neuron, what does the cell body do?
carries on most of the life activities of the neuron.
what does the CNS stand for what is in the CNS?
central nervous system -contains brain and spinal cord
What part of the brain helps make voluntary movement coordinated?
cerebellum
baby is born with normal reflex responses and sensations. He can voluntarily move his arms and legs but these movements are jerky and uncoordinated. What part of his nervous system may be damaged?
cerebellum
What is the function of the effector?
contracts to move the hand away from the harmful event
what are the ridges called in the brain?
gyri
What is the electrical signal that is conducted by a neuron?
impulse
What are two names for the electrical signal that is conducted along a neuron called?
impulse and action potential
Which type of neuron conducts the impulse from a sensory neuron to a motor neuron?
interneuron
parietal lobe
it is divided into 2 hemispheres functions in processing sensory info and interpretation (thinking)
in the neuron, what does the nucleus do?
it's inside the cell body. it controls the life activities of the neuron. (label h)
which type of neuron conducts the impulse from the spinal cord to an effector
motor neuron
Which structure forms an insulated covering for axons?
myelin sheath
what is the axon covered by?
myelin sheath
Which structure speeds up impulse conduction along an axon?
myelin sheath / nodes of ranvier
in the neuron, what do the axons do?
neuron conducts electrical impulses over long distances?
What are the chemical signal molecules produced by a neuron called?
neurotransmitter
Which part of a neuron controls the life activities of the neuron?
nucleus
occipital lobe
one of the 4 major lobes of the cerebral cortex vision
what does the PNS stand for and what is in the PNS?
peripheral nervous system -contains the nerves outside the brain and spinal cord and sensory nerves and motor nerves
how is the neuron re-polarized?
potassium ions rush out of the neuron while sodium ions rush in
where are memories formed?
prefrontal cortex
what is a reflux?
rapid, unlearned, involuntary (automatic) response to a stimulus (change in the environment)
in the neuron, what do the dendrites do?
receive chemical signals.
Which part of a neuron receives chemical signals from other neurons?
receptor/dendrites
in the neuron, what do the receptor proteins do?
recieve the chemical signal just like the dendrites
in the neuron, what do the terminal branches do?
send messges to other neurons
Which type of neuron conducts the impulse from the receptor to the spinal cord?
sensory neuron
in the neuron, what do the vesicles do?
store and release chemical messenger molecules called neurotransmitters.
what are the grooves in the brain called?
sulci
what is the small gap that each neuron is separated by?
synapse