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Anatomy > Spinal Cord 1 > Flashcards

Spinal Cord 1 Flashcards

1
Q

Which spinal segments are enlarged?

A

Cervical (C5-T1)

Lumbar (L1-S2)

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2
Q

What level does fetal spinal cord extend to?

A

L3

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3
Q

Describe the spinal cord arteries.

A

One is Anterior

Two are posterior (tortuous)

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4
Q

Somite origins & outcome

A

Dermatomes- Dermis
Myotome- Muscle
Scleratome- Skeletal

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5
Q

Compare & Contrast dermatomes & peripheral nerve fields

A

multiple dermatomes combine to form peripheral nerve fields

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6
Q

Dermatome C2

A

Back of head

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7
Q

Dermatome C6

A

Thumb & Index finger

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8
Q

Dermatome T4

A

Nipples

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9
Q

Dermatome T10

A

Umbilicus

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10
Q

Dermatome L3

A

Kneecap

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11
Q

Dermatome S1

A

Lateral foot

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12
Q

Describe limb rotation

A

Thumbs rotate laterally, Big toes rotate medially

pre-axial - flexors
post-axial - (remain) extensors

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13
Q

dorsolateral fasciculus

zone of lissauer

A

gateway for pain

contains finely myelinated & unmyelinated axons originating in substantia gelatinosa and involved in sensory modulation

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14
Q

nucleus proprius

A

Located on dorsal horn, origin of spinothalamic tract, relays pain & temperature

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15
Q

nucleus dorsalis (clark)

A

C8-L3, spinocerebellar tract

senses condition of muscle (position & stretch)

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16
Q

IML

A

sympathetic origin

17
Q

medial & lateral motor nuclei

A

medial and lateral structures tend to be innervated by medial and lateral motor nuclei respectively

18
Q

Free nerve endings

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? NO
  • slow vs. fast? SLOW
  • function? PAIN/TEMP
  • distribution? DEEP SKIN
19
Q

Merkel’s Disc

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? NO
  • slow vs. fast? SLOW
  • function? TOUCH
  • distribution? EXTREMITIES, GENITALIA, LIPS
20
Q

Hair Follicles

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? NO
  • slow vs. fast? FAST
  • function? TOUCH
  • distribution? HAIRY PLACES
21
Q

Meissner Corpuscle

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? YES
  • slow vs. fast? FAST
  • function? 2 POINT DISCRIMINATION
  • distribution? HAIRLESS SKIN, FINGERTIPS, JOINTS, LIGAMENTS
22
Q

Pacinian Corpuscle

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? YES
  • slow vs. fast? FAST
  • function? VIBRATION
  • distribution? EXTREMITIES, PALMS, MESENTRIES, PERITONEUM
23
Q

Ruffini Ending

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? YES
  • slow vs. fast? SLOW
  • function? STRETCH, PRESSURE
  • distribution? DERMIS
24
Q

Joint Receptor

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? YES
  • slow vs. fast? SLOW
  • function? JOINT POSITION
  • distribution? JOINT CAPSULES, LIGAMENTS
25
Q

Neuromuscular Spindle

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? YES
  • slow vs. fast? SLOW
  • function? LIMB MUSCLE, STRETCH/LENGTH
  • distribution? MUSCLES
26
Q

Golgi Tendon Receptors

  • encapsulated?
  • slow vs. fast?
  • function?
  • distribution?
A
  • encapsulated? YES
  • slow vs. fast? SLOW
  • function? MUSCLE TENSION
  • distribution? MUSCLE TENDON JUNCTION

Anatomy (17 decks)

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