1.1.2. Nerve Supply to the Upper Limb Flashcards Preview

3rd Year - MSK Upper Limb Anatomy > 1.1.2. Nerve Supply to the Upper Limb > Flashcards

Flashcards in 1.1.2. Nerve Supply to the Upper Limb Deck (17)
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1
Q

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

A

The Brachial Plexus

2
Q

Where can the Brachial Plexus be found?

A
  1. It begins at the Cervical Region

2, It extends to the Axilla

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

4
Q

What nerve roots form the Upper Trunk?

A
  1. C5

2. C6

5
Q

What is Erb’s Point?

A

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

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
  4. b) A Fall onto the shoulder
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
8
Q

What nerve roots form the Lower Trunk?

A
  1. C8

2. T1

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
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
11
Q

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

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

How are the Cords of the Brachial Plexus named?

A

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

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

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
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
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

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