03-03: Plexus and Nerves Flashcards

1
Q

Plexus

A

Group of nerves that ennervate

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2
Q

Plexus formation

A

Anterior rami of spinal nerves join together

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3
Q

Posterior (Dorsal) Root - Type

A

Sensory

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4
Q

Anterior (Ventral) Root - Type

A

Motor

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5
Q

Cervical Plexus

A

C1 - C4 (muscles of neck)

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6
Q

Brachial Plexus

A

C5 - T1 (muscles of upper limb)

- Can be divided into different sections/components

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7
Q

Lumbosacral Plexus

A

L1 - S5 (lower limb)

  • L1 - L4 Lumbar portion (thigh muscles)
  • L5 - S3 Sacral portion (leg and foot muscles)
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8
Q

Brachial Plexus Network

A

Roots (5-2), Trunks (3-1), Divisions (6), Cords (3-4), Terminal Branches (5)

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9
Q

(BPlex) Roots

A

C5, C6, C7, C8, T1

Dorsal Scapular, Long thoracic

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10
Q

(BPlex) Trunks

A

Superior, Middle, Inferior

Suprascapular

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11
Q

(BPlex) Divisions

A

Anterior (3), Posterior (3)
Anterior divisions - anterior to subclavian artery
Posterior divisions - posterior to subclavian artery

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12
Q

(BPlex) Cords

A

Lateral, Posterior, Medial

Lateral Pectoral, Medial Pectoral, Subscapular, Thoracodorsal

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13
Q

(BPlex) Terminal Branches

A

Musculocutaneous, Axillary, Radial, Median, Ulnar (MARMU)

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14
Q

Effect of Shortened Pec Minor

A

Places pressure on neurovascular bundle

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15
Q

Brachial Plexus location

A

Exits neck under clavicle around coracoid process of scapula; Enters into arm and ennervates muscles on arm

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