Mer Scott
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HUBS191 (Human Movement and Sensation (L16 - 31)) Quiz on L28 Sensory Receptors and the Somatosensory Cortex, created by Mer Scott on 12/05/2017.

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Mer Scott
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L28 Sensory Receptors and the Somatosensory Cortex

Question 1 of 16

1

Sensory neurons are generally unipolar.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 16

1

For special senses, there is a specialised receptor cell that is very sensitive to a particular stimulus which passes an action potential on to the afferent axon.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 16

1

Which of these is not a special sense?

Select one of the following:

  • Vision

  • Hearing

  • Taste

  • Smell

  • Vestibular (balance)

  • Touch

Explanation

Question 4 of 16

1

Which of these are somatic & visceral senses?

Select one or more of the following:

  • Touch

  • Pain

  • Hot/Cold

  • Vestibular (balance)

  • Body position

  • Vision

Explanation

Question 5 of 16

1

What is it called when a stimulus is converted into an action potential?

Select one of the following:

  • Translation

  • Transduction

  • Transferral

Explanation

Question 6 of 16

1

Choose the correct statement about types of sensory information coding.

Select one of the following:

  • Modality indicates which type or sensory receptor was activated.

  • Intensity is conferred by the strength of action potentials fired.

  • The duration of stimulus is conferred by the frequency of action potentials firing.

  • The location is conferred by the location of the axon terminal the potential stimulates.

Explanation

Question 7 of 16

1

The proprioreceptors detect posture and spatial position of muscle by:

Select one of the following:

  • detecting change of length in sarcomeres

  • detecting change of length in muscle spindles

  • detecting change of tension in muscle spindles

  • detecting change of tension in sarcomeres

Explanation

Question 8 of 16

1

(choose all correct options)
The Golgi tendon organ:

Select one or more of the following:

  • detects change in tension in muscle

  • provides a stretch reflex

  • protects from muscle tearing

Explanation

Question 9 of 16

1

The muscle spindles can cause contraction of the muscle while the Golgi tendon organ can cause relaxation of the muscle.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 16

1

Choose the incorrect statement about skin receptors.

Select one of the following:

  • Pacini's corpuscle are sensitive to changes in pressure and especially sensitive to vibration.

  • Ruffini's corpuscle is a stretch receptor with orientation.

  • Free nerve endings responsive to pain and itching.

  • Merkel's endings/discs and Meissner's corpuscle are deep, non peripheral sensors.

Explanation

Question 11 of 16

1

Sensors primarily detect change, thus they will adapt to a stimulus and response will decay over time until a new change occurs.

Select one of the following:

  • True
  • False

Explanation

Question 12 of 16

1

Touch receptors are slow adapting, while stretch receptors are rapidly adapting.

Select one of the following:

  • True
  • False

Explanation

Question 13 of 16

1

Choose the incorrect statement about receptive fields.

Select one of the following:

  • A receptive field is an area which when stimulated activates an associated neuron.

  • The smaller the field and denser the adjacent fields the better the discrimination of location.

  • The larger the field and sparser the fields the easier it is to discriminate between two points of contact.

Explanation

Question 14 of 16

1

Choose the correct statements about the somatosensory areas of the cortex.

Select one or more of the following:

  • The primary somatosensory cortex sits on the pre-central gyrus.

  • The primary somatosensory cortex gives a conscious identification of when and where a stimulus originated.

  • The somatic sensory association area is anterior to the primary somatosensory cortex.

  • The somatic sensory association area is responsible for meaningful interpretation of information from the primary somatosensory cortex.

Explanation

Question 15 of 16

1

Size of dedicated mapped area on the primary somatosensory cortex indicates size and density of relevant receptor fields. A large area would indicate many, small, dense receptor fields.

Select one of the following:

  • True
  • False

Explanation

Question 16 of 16

1

Choose the incorrect statement about pain differentiation.

Select one of the following:

  • Chronic/slow pain is transmitted by axons with a small diameter.

  • Chronic/slow pain is transmitted by myelinated axons

  • Acute/fast pain is generally somatic.

  • Chronic/slow pain is generally visceral.

  • Acute pain is transmitted by A fibers.

  • Acute pain is transmitted by axons with a large diameter.

Explanation

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