Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Brachial Plexus

The Ins and Outs of the Brachial Plexus

AnswerQuestion
Pectoralis Major - origin Origin: anternal medial clavicle, sternum, costal cartilages, aponeurosis of external oblique
P. Major - insertion Insertion: lateral intertubercular sulcus
P, Major - Action Action: adducts, flexes, and medially rotates humerus
P, Major - Innervation lateral and medial pectoral nerves
P. Minor - origin origin - ribs 3-5
P. Minor - insertion coracoid process of scapula
P. Minor - Action stabilizes scapula and draws it forward
P. Minor - Innervation Medial Pectoral Nerve
Subclavius - Origin 1st Rib
Subclavius - Insertion middle of clavicle
Subclavius - Action depresses clavicle
Subclavius - Innervation nerve to subclavius
Latissimus Dorsi - Origin Spines of 6 thoracic vertebrae, thorocolumnar fascia, iliac crest, lower 3 or 4 ribs.
Latissimus Dorsi - Insertion floor of intertubercular sulcus
Latissimus Dorsi - Action adducts, extends and rotates arm medially
Latissimus Dorsi - Innervation Thoracodorsal Nerve
Rhomboid Minor - Origin spinous processes of C7-T1, ligamentum nuchae
Rhomboid Minor - Insertion vertebral border of scapula at root of the spine
Rhomboid Minor - Action retracts and rotates scapula, fixes scapula to thoracic wall
Rhomboid Minor - Innervation dorsal scapular nerve (C4, C5)
Rhomboid Major - Origin spinous process of T2-T5
Rhomboid Major - Insertion vertebral border of scapula below root of spine
Rhomboid Major - Action retracts and rotates scapula, fixes scapula to thoracic wall
Rhomboid Major - Innervation Dorsal Scapular Nerve (C4, C5)
Teres Minor - Origin lower axillary border of scapula
Teres Minor - Insertion lower facet of greater tubercle of humerus
Teres Minor - Action Rotates arm laterally (with infraspinatous)
Teres Minor - Innervation Axillary Nerve
Teres Major - Origin dorsal inferior angle of scapula
Teres Major - Insertion crest of lesser tubercle of humerus
Teres Major - Action extends and rotates arm medially (with latissimus dorsi)
Teres Major - Innervation Lower Subscapular Nerve
Deltoid - Origin inferior surface of lateral 1/3 of clavicle, acromion, inferior margin of spine of scapula
Deltoid - Insertion deltoid tuberousity of humerus
Deltoid - action abducts, extends, and flexes arm; assists in medial and lateral rotation
Deltoid - Innervation axillary nerve
Supraspinatous - Origin supraspinous fossa
Supraspinatous - Insertion upper facet of greater tubercle of humerus
Supraspinatous - Action initiates abduction, stabilizes shoulder joint (with other rotator cuff muscles), "resists" upper pull of deltoid
Supraspinatous - Innervation suprascapular nerve
Infraspinatous - Origin Infraspinous Fossa
Infraspinatous - Insertion middle facet of greater tubercle of humerus
Infraspinatous - Action Rotates arm laterally (with Teres minor)
Infraspinatous - Innervation suprascapular nerve
Trapezius - Origin EOP, superior nuchal line, ligamentum nuchae, spinous processes of C7 and all 12 thoracic spines
Trapezius - Insertion lateral 1/3 of clavicle, spine of scapula, acromion
Trapezius - Action adducts scapula, tilts chin forward, draws acromion backward, rotates scapula.
Trapezius - Innervation Spinal Accessory Nerve (CN XI) and C3 and C4
Levator Scapulae - Origin transverse processes of C1-C4
Levator Scapulae - Insertion vertebral border of scapula above root of spine
Levator Scapulae - Action elevates scapula, if scapula is fixed inclines neck
Levator Scapulae - Innervation Dorsal scapular nerve (mainly) and direct branches of C3 and C4
Biceps Brachii - Origin short head: coracoid process of scapula; long head - supraglenoid tubercle of scapula
Biceps Brachii - Insertion radial tuberosity
biceps brachii - Action powerful flexor of forearm at elbow
biceps brachii - Innervation musculocutaneous nerve (C5 and C6)
Coracobrachialis - Origin coracoid process of scapula
Coracobrachialis - Insertion middle of medial surface and border of humerus
Coracobrachialis - Action flexes and adducts arm at the shoulder
Coracobrachialis - Innervation musculocutaneous nerve (C5 and C6)
Brachialis - Origin distal half of anterior humerus
Brachialis - Insertion tuberosity and anterior surface of coronoid process of ulna
Brachialis - Action powerful flexor of forearm at elbow
Brachialis - Innervation musculocutaneous nerve (C5 and C6); radial nerve sends a minor branch (C7)
Triceps Brachii - Origin long head: infraglenoid tubercle of scapula, lateral head: posterior surface of humerus, medial head: posterior surface of humerus inferior to radial groove
Triceps Brachii - Insertion olecranon process of ulna
Triceps Brachii - Action all 3 heads: extend forearm at elbow: long head extends humerus at shoulder joint
Triceps Brachii - Innervation Radial Nerve (C7, C8)
Created by: igelderloos