Test
Physiology II: Somatosensory System 1 - Primary Sensory Neurones and their Modalities
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Preguntas del test (13)
1The Somatosensory System can be subdivided into 3 parts:
[blank_start]Exteroceptive Division[blank_end]: Registers cutaneous sensation by numerous receptors
[blank_start]Proprioceptive Division[blank_end]: Monitors posture and movement via receptors in muscles, tendons and joints
[blank_start]Enteroceptive Division[blank_end]: Reports upon the internal state of the body- AEnteroceptive Division
- BProprioceptive Division
- CExteroceptive Division
2Resting membrane potential is [blank_start]-90[blank_end]mV, whereras the resting potential of a neuron is [blank_start]-70[blank_end]mV.
- A-90
- B-70
3A [blank_start]nociceptor[blank_end] is a receptor that responds to potentially damaging stimuli by sending 'threat' signals to the brain
- Anociceptor
4[blank_start]Low threshold thermoreceptors[blank_end] mediate cold, cool, indifferent, warm and hot sensations
[blank_start]Thermal nociceptors[blank_end] respond to extreme degrees of heat (both hot and cold)
[blank_start]Chemical nociceptors[blank_end] responds to potentially damaging substances in tissue- ALow threshold thermoreceptors
- BThermal nociceptors
- CChemical nociceptors
- DLow threshold chemical receptors
5Cutaneous afferent fibres in the fingertips are of a [blank_start]high[blank_end] density of innervation, each fibre having a [blank_start]small[blank_end] receptive field in order to allow a [blank_start]high[blank_end] acuity in terms of sensation.
- Ahigh
- Blow
- Csmall
- Dlarge
- Ehigh
- Flow
6Two point discrimination (spacial acuity) in higher in the [blank_start]finger tip[blank_end] but lower in the [blank_start]forearm[blank_end], due to the differing sizes of the afferent fibres' receptive fields.
- Afinger tip
- Bforearm
- Cforearm
- Dfinger tip
7As receptive field size increases, spatial acuity [blank_start]decreases[blank_end].
- Adecreases
- Bincreases
8Which layer of the epidermis contains merkel cells?
- ABasal layer
- BKeratin layer
- CGranular layer
- DPrickle cell layer
9[blank_start]Merkel cells[blank_end]: Sensitive to sustained pressure, texture and edges of objects
[blank_start]Meissner corpuscles[blank_end]: Sensitive to stroking, flutter & low frequency vibration
[blank_start]Pacinian corpuscles[blank_end]: Very sensitive to higher frequency vibration, act as event detectors during object manipulation
[blank_start]Ruffini endings[blank_end]: Sensitive to shearing forces (e.g. drag)- AMerkel cells
- BMeissner corpuscles
- CPacinian corpuscles
- DRuffini endings
10Hairless skin is referred to as [blank_start]glabrous[blank_end] skin
- Aglabrous
11[blank_start]Pacinian corpuscles[blank_end] are found in the subcutaneous tissues
- APacinian corpuscles
- BMeissner corpuscles
- CRuffini endings
12The structure is called a ...

- APacinian Corpuscle
- BMeissner Corpuscle
- CRuffini ending
- DMerkel cell
13Each hair unit is innervated by free nerve endings that either wrap around the follicle or run parallel to it. Label these fibres below.

- APalisade Fibres
- BCircumferential Fibres
- CLongitudinal Fibres
Información
- Descripción
- Somatosensory system 1: Primary sensory neurones and their modalities given on 3/5/18
- Autor
- Matthew Coulson
- Idioma
- English
- Visitas
- 54
- Historial
- Creado el 5 sep 2018 · actualizado el 5 sep 2018
- Etiquetas
- Valoración
- Aún sin valoraciones Valora este test