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NEUROANATOMY > Week 6: Somatosensory and Visual Pathways > Flashcards

Week 6: Somatosensory and Visual Pathways Flashcards

1
Q

Neuron Type in Dorsal Root Ganglion or Trigeminal Ganglion

A

Pseudounipolar cells

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2
Q

Fine Touch Axon Diameter

A

Thick

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3
Q

Pain and Temperature Axon Diameter

A

Thin

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4
Q

Proprioceptor Types

A

Muscles spindle organ and golgi tendon organ

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5
Q

Muscle Spindle Organ Function

A

Supports contraction

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6
Q

Golgi Tendon Organ Function

A

Allows for stretching of muscle

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7
Q

Proprioceptor Nerve Axon Diameter

A

Thick and myelinated A alpha fibers

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8
Q

Mechanoreceptor Types

A

Meissner’s Corpuscles, Merkel Cells, Ruffini’s Corpuscles, Pacinian Corpuscles

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9
Q

Meissner’s Corpuscles and Merkel Cell Function

A

Texture and superficial sensation

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9
Q

Ruffini’s Corpuscles Function

A

Deep Pressure

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9
Q

Pacinian Corpuscles Function

A

Vibration

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10
Q

Mechanoreceptor Axon Diameter

A

Medium diameter myelinated A beta fibers

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11
Q

Pain and Temperature Receptor Types

A

Free nerve endings of cold, hot, and pain reception

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12
Q

Pain and Temperature Receptor Axon Diameter

A

Small unmyelinated A delta fibers

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13
Q

Cervical tract proximity to gray matter in the spinal cord.

A

Close to gray matter

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14
Q

Gracial Fasciculus Location in Spinal Cord

A

Just lateral to the dorsal median fissure

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15
Q

Cuneate Fasciulus Location in Spinal Cord

A

Just medial to the dorsal horn

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16
Q

Lateral Corticospinal Tract Location in Spinal Cord

A

Lateral and ventral to the dorsal horn, lateral and dorsal to the ventral horn

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17
Q

Spinothalamic Tract Location in Spinal Cord

A

Lateral and ventral to the ventral horn

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18
Q

Ventral Posterior Medial Thalamic Nuclei Function

A

Sensation related to the face

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19
Q

Ventral Posterior Lateral Thalamic Nuclei Function

A

Sensation related to the body

20
Q

Median Dorsal Thalamic Nuclei Function

A

Emotional processing of pain

21
Q

Dorsal Column Medial Lemniscus Function

A

Fine touch, vibration, and concious proprioception to the body

22
Q

Dorsal Column Medial Lemniscus First and Second Neurons

A

Fasciculus gracilis or cuneatus, nucleus gracilis or cuneatus

23
Q

Dorsal Column Medial Lemniscus Decussation Location

A

Internal arcuate fibers of medulla

24
Q

Dorsal Column Medial Lemniscus Third Neuron

A

Ventral posterior lateral nucleus

25
Q

Trigeminal Lemniscus Function

A

Fine touch and vibration to the face

26
Q

Trigeminal Lemniscus First and Second Neurons

A

Trigeminal Nerve, main trigeminal sensory nucleus

27
Q

Trigeminal Lemniscus Decussation Location

28
Q

Trigeminal Lemniscus Third Neuron

A

Ventral posterior medial nucleus

29
Q

Mesencephalic Trigeminal Nucleus Function

A

Proprioception and reflexes of the face

30
Q

Anterolateral System Function

A

Crude touch, pain, and temperature to the body

31
Q

Anterolateral System First and Second Neuron

A

Dorsolateral fasciculus and 1 to 2 levels of the dorsal horn

32
Q

Anterolateral System Decussation Location

A

Anterior white commissure of spinal cord

33
Q

Anterolateral System Third Neuron

A

Ventral Posterior Lateral Nucleus

34
Q

Trigeminothalamic Tract Function

A

Crude touch, pain, and temperature to the face

35
Q

Trigeminothalamic Tract First and Second Neurons

A

Spinal trigeminal tract and spinal trigeminal nucleus

36
Q

Trigeminothalamic Tract Third Neuron

A

Ventral Posterior Medial Nucleus

37
Q

Retinal Layers Deep to Shallow

A

Pigmented, photoreceptor, outer nuclear, outer plexiform, inner nuclear, inner plexiform, ganglion cell, nerve fiber

38
Q

Rods Function and Location

A

Low light seeing, concentrated on the periphery of retina

39
Q

Cones Function and Location

A

Color vision, concentrated in the central retina

40
Q

Axons of Ganglion Cells Collect Here in the Eye

A

Optic disk

41
Q

Fovea

A

Central vision with the highest acuity and most input from the optic nerve

42
Q

Fovea Cells

43
Q

Lateral Geniculate Nucleus Layers

A

1 and 2 magnocellular, 3 through 6 parvocellular

44
Q

Magnocellular Layer Function

A

Motion and spatial analysis

45
Q

Parvocellular Layer Function

A

Color and shape

46
Q

Retinotopic Organization of Primary Visual Cortex

A

Central vision at the most posterior aspect, then 20, 60, and 90 degrees as we progress anteriorly

47
Q

Posterior Parietal Lobe Function

A

Visual association area related to spatial awareness, magnocellular pathway

48
Q

Temporal Lobe Function

A

Visual association area related to object identification, parvocellular pathway

49
Q

Superchiasmatic Nucleus Function

A

Regulates circadian rhythms based on light input from retina

NEUROANATOMY (11 decks)

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