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