Physiology II: Somatosensory System 1 - Primary Sensory Neurones and their Modalities

Pregunta 1 de 13

1

The Somatosensory System can be subdivided into 3 parts:
❌: Registers cutaneous sensation by numerous receptors
❌: Monitors posture and movement via receptors in muscles, tendons and joints
❌: Reports upon the internal state of the body

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Enteroceptive Division

Proprioceptive Division

Exteroceptive Division

Explicación

Pregunta 2 de 13

1

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Resting membrane potential is mV, whereras the resting potential of a neuron is mV.

Explicación

Pregunta 3 de 13

1

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A is a receptor that responds to potentially damaging stimuli by sending 'threat' signals to the brain

Explicación

Pregunta 4 de 13

1

❌ mediate cold, cool, indifferent, warm and hot sensations
❌ respond to extreme degrees of heat (both hot and cold)
❌ responds to potentially damaging substances in tissue

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Low threshold thermoreceptors

Thermal nociceptors

Chemical nociceptors

Low threshold chemical receptors

Explicación

Pregunta 5 de 13

1

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Cutaneous afferent fibres in the fingertips are of a ( high, low ) density of innervation, each fibre having a ( small, large ) receptive field in order to allow a ( high, low ) acuity in terms of sensation.

Explicación

Pregunta 6 de 13

1

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Two point discrimination (spacial acuity) in higher in the ( finger tip, forearm ) but lower in the ( forearm, finger tip ), due to the differing sizes of the afferent fibres' receptive fields.

Explicación

Pregunta 7 de 13

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As receptive field size increases, spatial acuity ( decreases, increases ).

Explicación

Pregunta 8 de 13

1

Which layer of the epidermis contains merkel cells?

Selecciona una de las siguientes respuestas posibles:

Basal layer
Keratin layer
Granular layer
Prickle cell layer

Explicación

Pregunta 9 de 13

1

❌: Sensitive to sustained pressure, texture and edges of objects
❌: Sensitive to stroking, flutter & low frequency vibration
❌: Very sensitive to higher frequency vibration, act as event detectors during object manipulation
❌: Sensitive to shearing forces (e.g. drag)

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Merkel cells

Meissner corpuscles

Pacinian corpuscles

Ruffini endings

Explicación

Pregunta 10 de 13

1

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Hairless skin is referred to as skin

Explicación

Pregunta 11 de 13

1

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( Pacinian corpuscles, Meissner corpuscles, Ruffini endings ) are found in the subcutaneous tissues

Explicación

Pregunta 12 de 13

1

Haz click en el punto naranja y selecciona la respuesta correcta

The structure is called a ...

Explicación

Pregunta 13 de 13

1

Each hair unit is innervated by free nerve endings that either wrap around the follicle or run parallel to it. Label these fibres below.

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Palisade Fibres

Circumferential Fibres

Longitudinal Fibres

	Creado por Matthew Coulson hace alrededor de 6 años

Somatosensory system 1: Primary sensory neurones and their modalities given on 3/5/18

Physiology II: Somatosensory System 1 - Primary Sensory Neurones and their Modalities

Physiology II: Somatosensory System 1 - Primary Sensory Neurones and their Modalities

Pregunta 1 de 13

The Somatosensory System can be subdivided into 3 parts: ❌: Registers cutaneous sensation by numerous receptors ❌: Monitors posture and movement via receptors in muscles, tendons and joints ❌: Reports upon the internal state of the body

Arrastra y suelta para completar el texto.

Explicación

Pregunta 2 de 13

Rellena los espacios en blanco para completar el texto.

Resting membrane potential is mV, whereras the resting potential of a neuron is mV.

Explicación

Pregunta 3 de 13

Rellena el espacio en blanco para completar el texto.

A is a receptor that responds to potentially damaging stimuli by sending 'threat' signals to the brain

Explicación

Pregunta 4 de 13

❌ mediate cold, cool, indifferent, warm and hot sensations ❌ respond to extreme degrees of heat (both hot and cold) ❌ responds to potentially damaging substances in tissue

Arrastra y suelta para completar el texto.

Explicación

Pregunta 5 de 13

Selecciona la opción correcta de los menús desplegables para completar el texto.

Cutaneous afferent fibres in the fingertips are of a high low( high, low ) density of innervation, each fibre having a small large( small, large ) receptive field in order to allow a high low( high, low ) acuity in terms of sensation.

Explicación

Pregunta 6 de 13

Selecciona la opción correcta de los menús desplegables para completar el texto.

Two point discrimination (spacial acuity) in higher in the finger tip forearm( finger tip, forearm ) but lower in the forearm finger tip( forearm, finger tip ), due to the differing sizes of the afferent fibres' receptive fields.

Explicación

Pregunta 7 de 13

Selecciona la opción correcta del menú desplegable para completar el texto.

As receptive field size increases, spatial acuity decreases increases( decreases, increases ).

Explicación

Pregunta 8 de 13

Which layer of the epidermis contains merkel cells?

Selecciona una de las siguientes respuestas posibles:

Explicación

Pregunta 9 de 13

❌: Sensitive to sustained pressure, texture and edges of objects ❌: Sensitive to stroking, flutter & low frequency vibration ❌: Very sensitive to higher frequency vibration, act as event detectors during object manipulation ❌: Sensitive to shearing forces (e.g. drag)

Arrastra y suelta para completar el texto.

Explicación

Pregunta 10 de 13

Rellena el espacio en blanco para completar el texto.

Hairless skin is referred to as skin

Explicación

Pregunta 11 de 13

Selecciona la opción correcta del menú desplegable para completar el texto.

Pacinian corpuscles Meissner corpuscles Ruffini endings( Pacinian corpuscles, Meissner corpuscles, Ruffini endings ) are found in the subcutaneous tissues

Explicación

Pregunta 12 de 13

Haz click en el punto naranja y selecciona la respuesta correcta

The structure is called a ...

Explicación

Pregunta 13 de 13

Each hair unit is innervated by free nerve endings that either wrap around the follicle or run parallel to it. Label these fibres below.

Arrastra la opción correcta a cada uno de los puntos naranjas

Explicación

The Somatosensory System can be subdivided into 3 parts:
❌: Registers cutaneous sensation by numerous receptors
❌: Monitors posture and movement via receptors in muscles, tendons and joints
❌: Reports upon the internal state of the body

❌ mediate cold, cool, indifferent, warm and hot sensations
❌ respond to extreme degrees of heat (both hot and cold)
❌ responds to potentially damaging substances in tissue

Cutaneous afferent fibres in the fingertips are of a ( high, low ) density of innervation, each fibre having a ( small, large ) receptive field in order to allow a ( high, low ) acuity in terms of sensation.

Two point discrimination (spacial acuity) in higher in the ( finger tip, forearm ) but lower in the ( forearm, finger tip ), due to the differing sizes of the afferent fibres' receptive fields.

As receptive field size increases, spatial acuity ( decreases, increases ).

❌: Sensitive to sustained pressure, texture and edges of objects
❌: Sensitive to stroking, flutter & low frequency vibration
❌: Very sensitive to higher frequency vibration, act as event detectors during object manipulation
❌: Sensitive to shearing forces (e.g. drag)

( Pacinian corpuscles, Meissner corpuscles, Ruffini endings ) are found in the subcutaneous tissues