Sensory Nervous System Flashcards by Alice Caporn | Brainscape

Q

Proprioception is

A

Detecting relevant position

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Q

The somatic nervous system is divided into:

A

Sensory and motor NS

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Q

In the sensory nervous system what is the major relay centre

A

Thalamus

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Q

How many neurones in the sensory pathway

A

3

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Q

Which type of nerve endings detect pain/nociceptor

A

Free nerve endings - uncapsulated

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Q

What do encapsulated krause end bulbs detect

A

Temperature

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Q

What do nociceptors detect

A

Damage in stimulus

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Q

What senses does the dorsal column pathway relay

A

Fine touch, limb position

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Q

Which senses does the spino-thalamic pathway relay

A

Pain

Temperature

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Q

What chemicals are released by damaged tissues

A

Histamine

Bradykinin

Prostaglandins

Leukotrienes

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Q

Which nerve fibres send fast, sharp pain

A

A delta

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Q

Which nerve fibres send slow pain

A

C

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Q

What type of pain indicates tissue damage

A

Fast pain

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Q

Chronic pain lasts for

A

> 6months

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Q

The sensory cortex is located in the

A

Post central gyrus

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Q

What are the two functional parts of the somatic nervous system

A

Motor and sensory

Q

Nociceptors are sensitive to

A

Chemical substances released by damaged cells

Q

What are the free nerve endings of myelinated fibres

A

Nociceptors

Q

In the sensory pathway 1o neurons have a receptor in the …, cell body in the … or sensory ganglion in the …

A

Periphery

Dorsal root ganglion

Head

Q

What is the correct pathway from the nociceptors to the brain

A

Nociceptor - dorsal norm - spino thalamic tract - ventral posterior lateral nucleus in the thalamus - sensory cortex