U.E. Neurovascular A Flashcards
What is the Acronym for the Brachial Plexus Segmentations?
R T D C N
- Roots
- Trunks
- Division
- Cords
- Peripheral Nerves
(Really Tired Drink Coffee Now)
What are the Ventral Rami/roots of the spinal nerve for the Brachial Plexus?
C5
C6
C7
C8
T1
What are the segmentations of the Trunks for the Brachial Plexus?
- Upper Trunk
- Middle Trunk
- Lower Trunk
What Ventral Rami of the Spinal nerves innervate the Upper Trunk?
C5
C6
What Ventral Rami of the Spinal nerves innervate the Middle Trunk?
C7
What Ventral Rami of the Spinal nerves innervate the Lower Trunk?
C8
T1
Each of the Trunks in the Brachial plexus divid into what?
Divisions of Anterior and Posterior
6 total Divisions
The Anterior divisions of the Brachial plexus innervate which muscles?
Flexors
The posterior divisions of the brachial plexus innervate which muscles?
Extensors
After the Divisions of the Brachial plexus, what comes next and its segmentations?
Cords
- Lateral Cord
- Posterior Cord
- Medial Cord
The lateral cord is made up of which Trunk divisions?
Upper Anterior (C5-C6) Middle Anterior (C7)
The Posterior Cord is made up of which trunk divisions?
Upper Posterior (C5-C6)
Middle Posterior (C7)
Lower Posterior (C8-T1)
The Medial Cord is made up of which trunk divisions?
Lower Posterior (C8-T1)
After the Cords, the next segmentation is?
Peripheral Nerves
What are the Peripheral nerves of the Brachial plexes that branch of the Cords?
Axillary (C5-C6)
Musculocutaneous (C5-C7)
Radial (C5-T1)
Median (C6-T1)
Ulnar (C8-T1)
What segmentations innervate the Axillary Nerve?
C5-C6
What segmentations innervate the Musculocutaneous nerve?
C5-C7
What segmentations innervate the Radial Nerve?
C5-T1
What segmentations innervate the Median Nerve?
C6-T1
What Segmentations innervate the Ulnar Nerve?
(C8-T1)
Which 2 nerves are not retraceable on the brachial plexus that need to be memorized?
(Less segmentation than their parent cords)
Axillary N (C5-C6)
Median N (C6-T1)
What are the Supracalvicular Nerves of the Brachial Plexus?
Dorsal Scapular N
Suprascapular N
Long Thoracic N
Nerve to the Subclavius
The Dorsal Scapular Nerve is innervated by which segmentations?
C3-C5
The Suprascapular Nerve is innervated by which segmentations?
C4-C6
Which segmentations innervate Long Thoracic Nerve?
C5-C7
Which segmentations innervate Subclavius?
C5-C6
The Supracavicular Nerves branch directly from the ___________ or ____________ of the brachial plexus.
Anterior Rami or Trunks
The Infraclavicular Nerves branch directly from the brachial plexus from which section?
Cords
What muscles are innervated by the Dorsal Scapular Nerve?
(C3-C5)
Levator Scapulae
Rhomboid Major
Rhomboid Minor
What muscles are innervated by Suprascapular Nerve?
(C4-C6)
Supraspinatus
Infraspinatus
What muscles are innervated by Long Thoracic Nerve?
(C5-C7)
Serratus Anterior
The nerves directly going to subcalvius innervate what muscle?
(C5-C6)
Subcalvius
The Brachial plexus Passes under the ____________ and above the _______________
Under Clavicle
Above 1st Rib
What are 3 Situations that could impinge the Brachial plexus?
Costoclavicular Space Narrowing
Excessive Neck Lateral Flexion
Excessive Horizontal Adbuction
What situations may cause Costoclavicular space narrowing?
Drooping Shoulders
Heavy Backpacks
Fixation of the Clavicle with the 1st Rib
What situations may cause Excessive Neck Lateral Flexion?
Football tackles
Falls to the head/shoulder
Excessive Horizontal Abduction could cause what?
Pectoralis Minor Impingement
If someones Long Thoracic Nerve is damage, what physical abnormality might one find?
Winging of the Scapula
The Thoracodorsal nerve innervates which muscle?
Latissimus Dorsi
How might one injure their Thoracodorsal nerve?
Axilla Surgical Injury
What are the segmentations for Thoracodorsal Nerve?
C6-C8
This nerve is Infraclavicular and branches off the Median Cord and innervates Pec Major and Minor
Medial Pectoral Nerve
What are the segmentations for medial pectoral nerve?
C8-T1
This nerve branches of the infraclavicular lateral cord and innervates the pectoral muscles.
Lateral Pectoral Nerve
What are the segmentations for Lateral Pectoral Nerve?
C5-C7
This nerve branches off the Infraclavicular lateral cord and innervates Coracobrachialis, Biceps Brachii, and Brachialis.
Musculocutaneous Nerve
What are the segmentations for Musculocutaneous?
C5-C7
What cutaneous region does Musculocutaenous innervate?
Lateral Antebrachial
This nerve is infraclavicular and branches off the posterior cord. It innervates the Deltoid muscles and teres Minor
Axillary Nerve
What cutaneous region does the Axillary nerve innervate?
Superior Lateral Brachial Cut
What artery runs with the Axillary artery?
Posterior Humeral Circumflex Artery
What space can the axillary artery be found?
Quadrangular space
What are the borders of the Quadrangular space?
Teres Minor (Superior) Teres Major (Inferior) Triceps Long (Medial) Humerus (Lateral
What contents are found within the Quadrangular space?
- Posterior Humeral Circumflex Artery
- Axillary Nerve
This nerve runs infraclavicular off the posterior cord. It innervates the Triceps, Anconeus, and Brachioradialis.
Radial Nerve
What are the branches of the radial nerve?
Deep Radial N
Posterior Interosseous N
What are the segmentations of the Radial Nerve?
C5-T1
What are the borders of the Triceps Hiatus?
Teres Major (Superior) Humerus (Lateral) Triceps Long (Medial)
What are the contents found within the Triceps Hiatus?
Profunda Brachii A.
Radial N.
What muscles are innervated by the Deep Radial Nerve?
Extensor Carpi Radialis Longus
Extensor Carpi Radialis Brevis
Supinator
What muscles are innervated by the Posterior Interosseous Nerve?
Extensor Digitorum
Extensor Digiti Minimi
Extensor Carpi Ulnaris
Extensor Pollicis Longus
Extensor Pollicis Brevis
Exensor Indices
Abductor Pollicis Longus
What regions does the Radial Nerve Innervate?
Posterior Brachial
Inferior Lateral Brachial
Posterior Antebrachial
Superficial Radial
This nerve comes from the infraclavicular region and branches off the med Cord. It innervates many muscles and its segmentation is C8-T1.
Ulnar N.
What muscles are innervated by the Ulnar Nerve?
Flexor Carip Ulnaris
Flexor Digitorum Profundus
Abd Digiti Minimi
Flexor Digiti Minimi
Opponens Digiti Minimi
Lumbricles 3-4
Palmar and Dorsal Interossei
Add Pollicis
What are the cutaneous innervations of the Ulnar Nerve?
Medial Digital NN (Palmar and Dorsal)
Medial Wrist, Palm, & Dorsum
What are the 2 branches of the Ulnar Nerve?
Deep and Superficial
If one has damage to their ulnar nerve? What abnormality might we see?
Claw Hands
This nerve comes from the Infraclavicular region and branches off the lateral and medial cord. Its segmentations are C6-T1
Median Nerve
What muscles are innervated by the Median Nerve?
Pronator Teres
Flexor Carpi Radialis
Palmaris Longus
Flexor Digitorum Superficialis
Lumbricles 1-2
What are the branches off the median nerve?
Anterior Interosseous Nerve
Recurrent Median Nerve
What muscles does he Anterior Interosseous Innervate?
Pronator Quadratus
Flexor Pollicis Longus
Flexor Digitorum Profundus
What muscles does the Recurrent Median Nerve Innervate?
Adductor Pollicis Brevis
Flexor Pollicis Brevis
Opponens Pollicis
From the Spinal column, Name the segmentations of the Brachial plexus ending at the Ventral Rami/Root
1a. Dorsal Root –>
1b. Ventral Root –>
2. Dorsal Root Ganglion –>
3a. Posterior Rami
3b. Ventral Rami/Root
