Sensory and Motor Pathways

Modalities
Pain, pressure, temperature, proprioception, two-point discrimination, vibration, olfactory, vision and visceral sensations are all examples of sensory m---------.
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Free nerve endings
Unspecialised, afferent nerve fibre ending of a sensory neuron used to detect pain
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Muscle spindles
Sensory receptors within the body of a muscle that primarily detect changes in the length of the muscle
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Baroreceptors
Receptors that sense pressure changes by responding to change in the tension of the arterial wall
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Chemoreceptors
Receptors that detect changes in blood oxygen, carbon dioxide and pH
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Retina
Receives light that the lens has focused, converts the light into neural signals, and sends these signals on to the brain for visual recognition
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Hair cell of the ear
Sensory receptors of both the auditory system and the vestibular system
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Vestibular apparatus
Receives sensory information about motion, equilibrium and spatial orientation
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Dorsal column
The sensory/ascending tract that transmits fine touch, pressure and proprioception
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Dorsal root ganglion
Where are the first order neurones of the dorsal column, spinothalamic and spinocerebellar tracts located?
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Medulla oblongata
Where are the second order neurons of the dorsal column tract (found in the dorsal column nuclei) located?
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Decussation
What happens in the brainstem of the dorsal column tract,
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Medial leminiscus
What is the name of the white matter tract from which the axons of the dorsal column tract and spinocerebellar tract ascend?
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Thalamus
Where are the third order neurons of the dorsal column tract and the spinothalamic tract located?
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Spinothalamic
The sensory/ascending tract that transmits information about crude touch (anterior) and about pain and temperature (lateral)
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Posterior horn
Where are the second order neurons of the spinothalamic tract located?
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Spinocerebellar
The sensory/ascending tract that transmits information about touch and proprioception
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Ipsilateral cerebellum
Where the third order neurons of the spinocerebellar tract are located and the axons terminate
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Lateral corticospinal
The motor/descending tract for voluntary movement, i.e. for moving your hands
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Other cards in this set

Card 2

Front

Unspecialised, afferent nerve fibre ending of a sensory neuron used to detect pain

Back

Free nerve endings

Card 3

Front

Sensory receptors within the body of a muscle that primarily detect changes in the length of the muscle

Back

Preview of the back of card 3

Card 4

Front

Receptors that sense pressure changes by responding to change in the tension of the arterial wall

Back

Preview of the back of card 4

Card 5

Front

Receptors that detect changes in blood oxygen, carbon dioxide and pH

Back

Preview of the back of card 5
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