11/17 Anatomy of Brachial Plexis Flashcards
What are the spinal cord/nerve levels of the brachial plexus to innervate the upper limb
C5, C6, C7, C8, T1
The Vertebra level of the C5 spinal cord/nerve
C5 Vert
The Dermatome of the C5 spinal cord nerve
Lateral Shoulder
The myotome of the spinal cord/nerve C5
Shoulder abduction
The spinal cord/nerve C5 reflexes
Bicipital reflex
The Vertebra level of the C6 spinal cord/nerve
C6 Vert
The Dermatome of the C6 spinal cord nerve
Thumb (palmar surf)
The myotome of the spinal cord/nerve C6
Elbow flexion
The spinal cord/nerve C6 reflexes
Brachio-radialis reflex
The Vertebra level of the C7 spinal cord/nerve
C7 Vert
The Dermatome of the C7 spinal cord nerve
Middle Finger (palmer Serf)
The myotome of the spinal cord/nerve C7
Elbow Extension/Finger extensors
The spinal cord/nerve C7 reflexes
Triceps Reflex
The Vertebra level of the C8 spinal cord/nerve
C7 Vert
The Dermatome of the C8 spinal cord nerve
Pinky finger (palmer surf)
The myotome of the spinal cord/nerve C8
Wrist/finger flexion
The spinal cord/nerve C8 reflexes
N/A
The Vertebra level of the T1 spinal cord/nerve
T1 Vert
The Dermatome of the T1 spinal cord nerve
Medial elbow
The myotome of the spinal cord/nerve T1
Wrist/finger flexion
The spinal cord/nerve T1 reflexes
N/A
Describe the Brachial Plexus
5 Roots; 3 Trunks; 6 Divisions; 3 Cords; 5 Branches
what are the 5 roots of the brachial plexus?
C5-T1
what are the 3 trunks of the brachial plexus
the Upper, Middle, and Lower
What are the branches off the upper trunk of the brachial plexus?
The suprascapular above, and the subclavius below
The 6 divisions of the brachial plexus
Anterior/Posterior from upper trunks; Anterior and posterior from middle trunk; the Anterior/Posterior of the Lower trunks
the 3 cords of the brachial plexus
Lateral; Posterior; Medial
what is the branch off the lateral cord of the brachial plexus?
the Lateral pectoral
what are the three branches off the posterior cord of the brachial plexus
Upper, middle, lower subscaapular
What are the three branches of the medial cord?
Medial pectoral; Medial cutaneous n. of arm; Medial cutaneous n. of forearm
What are the 5 branches of the brachial plexus
Musculocutaneous; Median; Axillary; Radial; Ulner.
Draw the brachial plexus
THE HIGHER THE LESION…
THE MORE MORE PROXIMAL THE DERMITOME/MYOTOME
The full table of Dermatomes, Myatomes, and nerves for the brachial plexus.
The great Neurological levels lecture….
What does every somite level have?
a spinal cord segment
that is associated with a vetebral cord segment
that is associated with a Spinal nerve element that gives us: dermatome and myotome component for the dorsal ramus (back) and a dermatomr and myatome component for the ventral ramus. (body wall and limbs)
where do the spinal roots fuse and make the trunk?
not until they exit the vetebral foramen
