Biopsychology: Structure & Function of Sensory, Motor & Relay Neurons 24/25 UPDATED COPY Flashcards
Which neuron is only found in the brain/visual system and spinal cord?
Relay neurons
Which neuron carries nerve impulses from the brain/spinal cord to muscles/glands?
Motor Neurons
Which neuron carries nerve impulses between neurons?
Relay Neurons
Which neuron is this?
Motor Neuron
Which neuron is this?
Relay Neurons
Which neuron is this?
Sensory Neuron
Name A B and C
A - Sensory
B- Relay
C- Motor
Answer the statement.
C - Towards the brain
Where are sensory neurons located?
In the Peripheral Nervous System in clusters known as ganglia
Sensory Neurons send information
from the senses (PNS) towards the brain (CNS)
Where are sensory neuron receptors found?
Eyes, ears, tongue and skin
This type of neuron has long dendrites and short axons.
Sensory Neurons
This type of neuron has short dendrites, short axons and no myelin sheath.
Relay Neurons
This neuron has no myelin sheath.
Relay neurons
This neuron has short dendrites and long axons.
Motor neurons
True or false?
Motor neurons have long dendrites and short axons.
False
They have short dendrites and long axons
These neurons are located in the brain and visual system.
Relay neurons
These neurons are found in the spinal cord.
Relay neurons
These neurons carry nerve impulses between neurons
Relay neurons
These neurons allow sensory and motor neurons to communicate.
Relay neurons
The cell bodies of motor neurons are located in …
Central Nervous System
The long axons of motor neurons are part of the …
Peripheral Nervous System
These neurons send information to effectors.
Motor neurons
Give an example of an effector
Muscle or glands
This sends a nerve impulse through the neuron.
The axon
This part of the neuron contains the genetic material of the cell.
Cell body
This part of the neuron protects the axon.
Myelin sheath
The gaps between the neurons are called …
the nodes of ranvier
This part of the neuron is the end of the neuron.
Terminal button
Is the signal within the neuron: electrical or chemical
Electrical
When information crosses from the pre to the post synaptic neuron, is it electrical or chemical.
Chemical
What is another name for a nerve impulse?
Action Potential
A motor neuron is located in the PNS in clusters known as ganglia - TRUE or FALSE.
False - this is the location of a Sensory neuron
A relay neuron is found in the brain/spinal cord/visual system - TRUE or FALSE?
True
Sensory neurons send information via long axons from the brain/spinal cord through to effectors like muscles or glands - TRUE or FALSE.
False - This is the function of a motor neuron.
How would we visually identify the difference between a sensory and a motor neuron?
A sensory neuron has long dendrites and short axons, whereas a motor neuron has short dendrites and long axons. Also, a sensory neuron’s cell body is located in the middle of the axon, whilst a motor neuron’s cell body is located at the top (close the the dendrites).
How would we visually identify the difference between a relay and a motor neuron?
Relay neurons have no myelin sheath whereas motor neurons have myelin sheath
