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Brachial Plexus Branches
Table 7.7
15
Biology
Graduate
10/05/2011

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Term
Dorsal Scapular
Definition
Origin: C5 root
Spinal segment: C5
Function: motor
*Rhomboid major and minor
Term
Long thoracic
Definition
Origin: C5 to C7 roots
Spinal Segments: C5 to C7
Function: motor
*Serratus anterior
Term
Suprascapular
Definition
Origin: Superior trunk
Spinal segment: C5, C6
Function: motor
*Supraspinatus, infraspinatus
Term
Nerve to subclavius
Definition
Origin: Lateral cord
Spinal Segments: C5, C6,
Function: motor
*Subclavius
Term
Lateral pectoral
Definition
Origin: Lateral cord
Spinal segment: C5 to C7
Function: motor
*Pectoralis motor
Term
Musculocutaneous
Definition
Origin: Lateral cord
Spinal segments: C5 to C7
Function: motor and sensory
*All muscles in ther anterior compartment of arm
*Skin on lateral side of forearm
Term
Medial pectoral
Definition
Origin: Medial cord
Spinal segments: C8, T1
Function: sensory
*Skin on medial side of distal one-third of arm
Term
Medial cutaneous of forearm
Definition
Origin: Medial cord
Spinal segments: C8, T1
Function: sensory
*Skin on medial side of forearm
Term
Median
Definition
Origin: Medial and lateral cords
Spinal segments: C5, C6 to T1
Function: motor and sensory
*All uslces in the anterior compartment of the forearm (Expect flzor carpi ulnaris and medial half of flexor digitorum profundus), three thenar muscles of the thumb anf two lateral lumbrical muscles
*Skin over the palmar surface of the lateral three and one-half digist and over the lateral side of the palm and middle of the wrist.
Term
Ulnar
Definition
Origin: Medial cord
Spinal segments: (C7), C8, T1
Function: motor and sensory
*All instrinsic muscles of the hand (except thenar muscles and two lateral lumbricals); also flexor carpi ulnaris and the medial half of flexor digitorum profundus in the forearm
*Skin over the palmar surface of medial one and one-half digits and associated palm and wrist, and skin over the dorsal surface of the medial one and one-half digits
Term
Superior subscapular
Definition
Origin: Posterior cord
Spinal segments: C6 to C8
Function: motor
*Latissimus dorsi
Term
Thoracodorsal
Definition
Origin: Posterior cord
Spinal segments: C6 to C8
Function: motor
*Latissimus dorsi
Term
Inferior subscapular
Definition
Origin: Posterior cord
Spinal segments: C5, C6
Function: motor
*Subscapularis, teres major
Term
Axillary
Definition
Origin: Posterior cord
Spinal segments: C5, C6
Function: motor and sensory
*Deltiod, teres minor
*Skin over upper lateral part of arm
Term
Radial
Definition
Origin: Posterior cord
Spinal segments: C5 to C8, (T1)
Function: motor
*All muscles in the posterio compartments of arm and forearm
*Skin on the posterior aspects of the arm and forearm, the lower lateral surface of the arm, and the dorsal lateral surface of the hand.
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