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Biomed 6 > Different Tracts > Flashcards

Different Tracts Flashcards

1
Q

Which sensation does DCML carry?

A

Fine touch, vibration and conscious proprioception

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2
Q

What sensation does the lateral spinothalamic tract carry?

A

Pain and temperature

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3
Q

What sensation does the anterior spinothalamic tract carry?

A

Crude touch

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4
Q

What sensation does the spinocerebellar tract carry

A

Unconscious proprioception

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5
Q

Define the term anterolateral (spinothalamic)

A

Is the pathway via which pain signals are carried to the sensory cortex

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6
Q

Define lissauers fasciculus

A

Crude touch and pressure related axons ascend or descend one or two levels here

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7
Q

What is the substantia gelatinosa (spinothalamic)

A

The site of the first synapse in the spinothalamic tract

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8
Q

What is the anterior white commissure?

A

Site of decussation for the 2nd order neuron of the spinothalamic tract

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9
Q

What is miessners corpuscles of the DCML

A

Skin mechanoreceptors sensitive to fine touch

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10
Q

What is pacinian corpuscles of the DCML

A

Skin mechanoreceptors sensitive to deep touch

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11
Q

What are Ruffini nerve endings of the DCML

A

Skin mechanoreceptors sensitive to skin stretch

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12
Q

What are Merkel nerve endings of the DCML

A

Skin mechanoreceptors sensitive to light touch

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13
Q

Is the spinocerebellar ascending, descending, afferent, efferent, contralateral, ipsilateral pathways?

A

Ascending, afferent, ipsilateral

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14
Q

What is the role of the spinocerebellar pathway?

A

Carries unconscious proprioception sensation from the body through the spinal cord to the cerebellum, plays a role in muscular coordination

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15
Q

What is Clarkes nucleus and what is it significance?

A

It is the beginning of the spinocerebellar pathway, only exists in the spine between L2-C8

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16
Q

Is the spinocerebellar ascending, descending, afferent, efferent, contralateral, ipsilateral pathway?

A

Ascending, afferent, ipsilateral pathway

17
Q

What is the spinocerebellar role?

A

It carries unconscious proprioception to the body, plays an important role in muscle coordination

18
Q

What is clarkes nucleus and what is it significance

A

It is the beginning of spinocerebellar pathway, only exist in the spine between L2 -C8

19
Q

What is the info carried in the ventral spinocerebellar tract

A

Relays proprioceptive and extroceptive input from the ipsilateral trunk and lower limb. Assists in coordination of lower limb muscles and posture assistance

20
Q

What is the info carried in the Dorsal spinocerebellar tract

A

Mainly proprioception from ipsilateral skeletal muscles, joints, tendons in the ipsilateral torso and limb

21
Q

What is the info carried in the rostral spinocerebellar tract

A

Relays proprioceptive input primarily from the ipsilateral head and upper limb

22
Q

What is the info carried in the cuneocerebellar

A

Relays proprioceptive input primarily from the ipsilateral head and upper limb

23
Q

What type of specific information is carried in the lateral corticospinal tract?

A

Conveys commands for fine motor movement of ipsilateral limbs

24
Q

What type of specific information is carried in the Anterior corticospinal?

A

Conveys commands for the movements of the contralateral axial muscles

25
Q

What is the anterior white commissure?

A

Is a bundle of nerve fibres which cross the midline of the spinal cord, fibres carrying pain sensation in the spinothalamic tract contribute to this commissure as do fibres from the anterior corticospinal tract which carry signals from the primary motor cortex

26
Q

What type of info is carried in the lateral corticospinal tract

A

Movement of limbs

27
Q

What type of info is carried in the anterior corticospinal tract

A

Axial movement

28
Q

What type of info is carried in the rubrospinal corticospinal tract

A

Controlling muscle tone of extensor and flexor muscles

29
Q

What type of info is carried in the tectospinal corticospinal tract

A

Fear stimulus movement

30
Q

What type of info is carried in the reticulospinal corticospinal tract

A

Respiratory muscles and eye movement

31
Q

What type of info is carried in the vestibulospinal corticospinal tract

A

Receives information from the inner ear to monitor and adjust head position

Biomed 6 (2 decks)

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