Flashcards in 3.1 Upper Limb Anatomy Deck (51):
What nerve is most likely damaged if a break occurs at the surgical neck?
What nerve is most likely damaged if a break occurs at the radial groove?
What nerve is most likely damaged if a break occurs at the distal humerus?
What nerve is most likely damaged if a break occurs at the medial epicondyle?
What are the Trapezius attachment points?
C-spine, T-spine, scapular spine, and clavicle
What are the actions of the Trapezius?
Scapular rotation and retraction
Action of the Rhomboids?
Action of the Levator Scapula?
Attachment of the Serratus Anterior?
Medial border of scapula to ribs
Action of Serratus Anterior?
Innervation of Serraturs Anterior?
Long thoracic nerve
Injury to the Long thoracic nerve causes what?
Scapular spin, clavicle, deltoid tuberosity
Actions of Deltoid?
Abduction, flexion, extension
Innervation of the deltoid?
What are the rotator cuff muscles?
3) Teres minor
Which muscle of the posterior arm crosses both shoulder and elbow joints?
Long head of the triceps brachii
Boundaries of the cubital fossa?
1) Line between the lateral and medial epicondyles
2) Pronator tores
Contents of the cubital fossa?
1) Radial Nerve
2) Biceps Tendon
3) Brachial Artery
4) Medial Nerve
Which subcutaneous vein travels along the lateral side of the arm?
Which subcutaneous vein travels along the medial side of the arm?
Action of Pectoralis Major?
Adducts and medially rotates humerus; draws scapula anteriorly and inferiorly
Innervation of the pectorals major?
Lateral and medial pectoral nerves
Pectoralis minor Innervation?
Medial pectoral nerve
Action pectoralis minor?
Stabilizes scapula by drawing it inferiorly and anteriorly against thoracic wall
Serratus anterior action?
Protrracts scapula and holds it agains thoracic wall; rotates scapula
Serratus anterior innervation?
Long thoracic nerve
Spinal accessory nerve and C3/C4 spinal nerves
Elevates, depresses, and retracts scapula. Rotate glenoid cavity superiorly
Latissimus dorsi innervation?
Latissimus dorsi actions?
Extends adducts and medially rotates humerus
Levator Scapulae action?
Elevates scapula and rotates glenoid cavity inferiorly
Levator Scapulae innervation?
Dorsal scapular nerve and cervical nerves
Rhomboid minor and major innervation?
Dorsal scapular nerve
Rhomboid minor and major action?
Retract scapula and rotate glenoid cavity inferiorly
Action of supraspinatus?
initiates and assists deltoid in abduction of arm and acts with rotator cuff muscles
Action of infraspinatus?
Latterally rotate arm and acts with rotator cuff muscles
Teres minor action?
Laterally rotates arm and acts with rotator cuff muscles
Teres minor innervation?
Teres major action?
Adducts and medially rotates arm
Teres major innervation?
lower sub scapular nerve
Medially rotates arm
Biceps brachii action?
Supinates forearm and when it is supine flexes forearm, short head resists dislocation of shoulder.
Biceps brachii innervation?
Helps flex and adduct arm and resists dislocation of shoulder.
Triceps brachii innervation?