Neurons
Presentation
•
Science
•
12th Grade
•
Practice Problem
•
Hard
Amy P Trout
Used 9+ times
FREE Resource
3 Slides • 5 Questions
1
STRUCTURES AND FUNCTIONS OF THE
NEURON (Nerve Cell)
•Dendrite: many tree-like projections
from the neuron that carry messages to
the cell body
•Axon: the single long arm of the
neuron that carries messages away
from the cell body
•Myelin Sheath: insulating layer around
neurons that allow nerve impulses to
be transmitted quickly and efficiently
•Synapse: space separating two
neurons
2
NERVE IMPULSE
•Stimulus creates an impulse
•Impulse travels into the neuron
on the dendrite and out on the
axon
•At the end of the axon a
NEUROTRANSMITTER is released
•Neurotransmitter carries the
impulse across the synapse to the
next dendrite
3
Types of Neurons
•Sensory Neurons: sends
information from sensory
receptors (ie. Skin, eyes, ears,
nose, tongue) to the spinal cord
and brain
•Motor Neurons: sends
information from central
nervous system back to body
•Associative: (aka interneurons)
sends information between
sensory and motor neurons
4
Fill in the Blanks
A nerve cell is known as a/an:
Type answer...
5
Multiple Choice
Which part of the nerve cell is specially constructed to transmit a message from one cell to another nerve cell?
myelin sheath
dendrite
neuron
axon
6
Multiple Choice
Impulses enter the neuron by the way of the:
myelin sheath
dendrite
synapse
axon
7
Multiple Choice
Impulses travel from one neuron to another by way of the:
myelin sheath
dendrite
synapse
axon
8
Multiple Choice
In a nerve impulse, messages travel from one neuron to another by way of which sequence?
axon → myelin sheath → dendrite
dendrite → myelin sheath → axon
axon → synapse → dendrite
dendrite → synapse → axon
STRUCTURES AND FUNCTIONS OF THE
NEURON (Nerve Cell)
•Dendrite: many tree-like projections
from the neuron that carry messages to
the cell body
•Axon: the single long arm of the
neuron that carries messages away
from the cell body
•Myelin Sheath: insulating layer around
neurons that allow nerve impulses to
be transmitted quickly and efficiently
•Synapse: space separating two
neurons
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