1.1.2. Nerve Supply to the Upper Limb Flashcards

1
Q

What is the name given to the major network of nerves which innervate the upper limb?

A

The Brachial Plexus

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2
Q

Where can the Brachial Plexus be found?

A
  1. It begins at the Cervical Region 2, It extends to the Axilla
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3
Q
  1. What Rami forms the Brachial Plexus? 2. What Spinal Levels do these Rami come from?
A
  1. Ventral Rami 2. C5, C6, C7, C8, and T1
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4
Q

What nerve roots form the Upper Trunk?

A
  1. C5 2. C6
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5
Q

What is Erb’s Point?

A

The point where C5 and C6 converge to form the Upper Trunk

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6
Q
  1. What does injury to the Upper Trunk cause? 2. How will this present? 3. What can cause this?
A
  1. Erb’s Palsy - Paralysis of the Biceps Brachii, Brachialis, Corticobrachialis, and Brachioradialis 2. “Waiters Tip” appearance (medially rotated with wrist flexed) 3. a) Shoulder Dystocia at birth 3. b) A Fall onto the shoulder
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7
Q

What Acronym can be used to remember the order of Brachial Plexus stages?

A

Read - Roots That - Trunks Damn - Divisions Card - Cords Back - (Terminal) Branches

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8
Q

What nerve roots form the Lower Trunk?

A
  1. C8 2. T1
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9
Q
  1. What does injury to the Lower Trunk cause? 2. What can cause this?
A
  1. Klumpke’s Palsy - Paralysis of the Intrinsic Muscles of the Hand, and Ulnar Flexors of the Wrist and Fingers 2. Undue abduction of the arm
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10
Q
  1. What do the division of the 3 trunks form? 2. How many divisions do the trunks divide into? 3. Where can this be found?
A
  1. Cords (Read That Damn Card Back 2. 2, Each trunk has an Anterior and a Posterior Division 3. In the Axilla
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11
Q

What are the names of the Cords formed in the Axilla?

A
  1. Lateral Cord 2. Posterior Cord 3. Medial Cord
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12
Q

How are the Cords of the Brachial Plexus named?

A

After their position in relation to the Axillary Artery in the Axilla

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13
Q

What root(s) form the: a) Upper Trunk b) Middle Trunk c) Lower Trunk

A

The ventral rami of: a) C5 and C6 b) C7 c) C8 and T1

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14
Q

What are the branches of the Lateral Cord of the Brachial Plexus?

A
  1. Lateral Pectoral 2. Lateral Root of the Median Nerve 3. Musculocutaneous Nerve
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15
Q

What are the branches of the Medial Cord of the Brachial Plexus?

A
  1. Medial Pectoral 2. Ulnar Nerve 3. Medial Root of the Median Nerve 4. Medial Cutaneous Nerve of the Arm 5. Medial Cutaneous Nerve of the Forearm
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16
Q

What are the branches of the Posterior Cord of the Brachial Plexus?

A
  1. Thoracodorsal Nerve 2. Axillary Nerve 3. Radial Nerve 4. Upper and Lower Subscapular Nerve
17
Q

What nerve is formed from the roots of C5, C6, and C7?

A

The Long Thoracic Nerve

18
Q
A