UE Lecture 8- Exam 2 Flashcards
Scalene anterior
P: C3-C6 transverse tubercles
D: 1st rib, anterior scalene tubercle
N: anterior rami C4-C6
A: elevates ribs; with fixed ribs, flexes cervical spine to same side, flexes neck bilaterally
Scalene middle
P: C1-C7 transverse processes
D: 1st rib
N: anterior rami C3-C8
A: elevates ribs; when fixed flexes cervical spine and flexes neck
Posterior scalene
P: C5-C7 transverse processes
D: 2nd rib
N: anterior rami of C6-C8
A: elevates ribs, when fixed, flexes cervical spine and neck
Lats
P: spinous processes T7-T12, thoracolumbar fascia; inferior angle of scap; ribs 9-12; iliac crest
D: intertubercular groove of the humerus
N: thoracodorsal C6-8
A: internal rotation, adduction, extension, respiration
Subscapularis
P: subscapular
D: lesser tubercle of the humerus
N: upper and lower subscapular nn C5-6
A: IR
Omohyoid
P: superior border of scap
D: hyoid bone
N: ansa cervicalis C1-3 of cervical plexus
A: depressed fixed hyoid, draws larynx and hyoid down for phonation and terminal phases of swallowing
Platysma
P: skin over the lower neck and upper lateral thorax
D: mandible, skin over lower face and angle of mouth
N: cervical branch of facial, CN 7
A: depresses and wrinkles skin if lower face and mouth, tenses skin of neck, aids forced depression of mandible
Sternocleidomastoid
P: sternum and clavicle
D: mastoid process and superior nuchal line
N: motor- CN 11 proprioception- cervical plexus C2-4
A: unilaterally- tilts head to same side, rotates head to opposite
Bilaterally- extends head, aids in respiration when head is fixed
Which scalene arises from the highest level?
Scalene middle
Which anterior cervical rami supplies every scalene muscle?
C6
Which tight muscle would cause thoracic outlet syndrome?
Pec minor and lat tightness
Which muscles of the anterior chest/neck have their distal attachment as proximal?
Serratus anterior and sternocleidomastoid
Anterior wall of the Axilla
Pec major, pec minor, and clavipectoral fascia
Lateral wall of the axilla
Intertubercle groove of the humerus
Posterior wall of the axilla
Subscapularis, Teres major, Lats
Medial wall of axilla
Lateral thoracic wall, Serratus anterior
Inlet of axilla
Lateral margin of rib 1, clavicle, superior margin of scapula to coracoid process
Floor on axilla
Skin of armpit and opens laterally into the arm
Which artery and nerve run through the axilla? Which structures divide the posterior cord from the anterior medial and lateral cord?
Axillary artery and nerve
