Quiz
Physiology IV: Somatosensory System 2 - Primary Sensory Neurons and their Modalities
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Questions in this quiz (11)
1Sensory Pathways:
[blank_start]Dorsal Column/Medial Lemniscus System[blank_end] Discriminatory touch, pressure, vibration, proprioception
[blank_start]Spinothalmic Tract[blank_end] Pain, Thermosensation, itch, tickle- ADorsal Column/Medial Lemniscus System
- BSpinothalmic Tract
- CTectospinal Tract
- DCorticospinal Tract
2Third order neurons of the sensory pathways tend to originate in the [blank_start]Thalamus[blank_end] and project to the [blank_start]Primary Somatosensory Cortex[blank_end] (AKA the [blank_start]Postcentral[blank_end] Gyrus)
- AThalamus
- BHypothalamus
- CPutamen
- DCaudate Nucleus
- EPrimary Somatosensory Cortex
- FPrimary Motor Cortex
- GPostcentral
- HPrecentral
3Label the parts of the sensory and motor pathways shown below.

- ADorsal Column
- BSpinothalamic Tract
- CVentral Corticospinal Tract
- DLateral Corticospinal Tract
- ELateral Vestibulospinal Tract
- FMedullary Reticulospinal Tract
4The Dorsal Column is split into 2 parts, the fasciculus gracilis and fasciculus cuneatus. Which is which and what do they innervate?

- AFasciculus Gracilis
- BFasciculus Cuneatus
- CSensory Input Legs/Lower Trunk
- DSensory Input Arms/Upper Trunk
5The vertebral level where sensory information stops travelling via the fasciculus cuneatus and starts travelling in the fasciculus gracilis is ...
- AT6
- BC4
- CL1
- DS2
6In terms of the dorsal column medial lemniscus pathway, [blank_start]2nd[blank_end] order neurons cross collectively at the great sensory decussation and ascend in the [blank_start]medial lemniscus[blank_end] to the [blank_start]Ventral Posterior Lateral (VPL)[blank_end] nucleus of the thalamus
- A2nd
- B1st
- C3rd
- Dmedial lemniscus
- Elateral lemniscus
- Finferior colliculus
- GVentral Posterior Lateral (VPL)
- HVentral Superior Medial (VSM)
- IGeniculate
7The Dorsal Column Medial Lemniscus pathway allows for Stereognosis. What is this?
- AThe ability to recognise sounds by the vibrations they cause
- BThe ability to recognise an object by feeling it
- CThe ability to identify the magnitude of certain vibrations
8[blank_start]Lateral Inhibition[blank_end] is the way in which an active neuron inhibits the activity of its neighbours via inhibitory interneurons
- ALateral Inhibition
- BAdjacent Inhibition
- CLateral Depression
- DAdjacent Depression
9The somatosensory cortex has how many cell layers?
- A3
- B5
- C6
- D8
10As information is conveyed from one neuron to the next in a sensory pathway, differences in the activity of adjacent neurones are amplified. This phenomenon is called [blank_start]contrast enhancement[blank_end]
- Acontrast enhancement
11Lateral inhibition allows a more focussed idea of where a sensation has occurred in the body and is facilitated by a certain type of neuron. These neurons are called [blank_start]interneurons[blank_end]
- Ainterneurons
Information
- Description
- Somatosensory System 2 - Primary Sensory Neurons and their Modalities given on 4/9/2018
- Author
- Matthew Coulson
- Language
- English
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- 147
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