Anatomy 6511 Pectoral and Scapular Regions 낱말 카드

Clavicle, scapula, proximal humerus

What bones are within the shoulder region?

Intrinsic

Do intrinsic or extrinsic shoulder muscles have all of their attachments to the 3 shoulder region bones?

Extrinsic

Do intrinsic or extrinsic shoulder muscles have 1 set of their attachments to 1 or more shoulder region bones?

Supraspinatus, Infraspinatus, subscapularis, deltoid, teres major and minor

What are the intrinsic muscles of the shoulder region?

Scapulothoracic joint

What is an articulation between thoracic cage and scapular but is not a true joint?

Synovial, plane-type

What type of joint is the acromioclavicular joint?

Allows gliding movements

What is the action of the acromioclavicular joint?

Acromioclavicular ligament

What covers the acromioclavicular joint?

Coracoclavicular and coracoacromial ligaments

What ligaments strengthen the acromioclavicular joint?

Synovial, ball and socket type

What type of joint is the glenohumeral joint?

Flexion, extension, adduction, abduction, rotations, and circumduction

What movements does the glenohumeral joint allow?

Glenohumeral ligaments and rotator cuff tendons

What reinforces the glenohumeral joint?

Synovial, saddle type

What type of joint is the sternoclavicular joint?

Pectoral girdle and axial skeleton

The sternoclavicular joint is the only true joint between...

Sternoclavicular joint

What joint is very strong and dislocation is rare?

Acromial end

What part of the clavicle is labeled 1?

Conoid tubercle

What part of the clavicle is labeled 2?

Trapezoid line

What part of the clavicle is labeled 3?

Sternal end

What part of the clavicle is labeled 4?

Scapulothoracic joint

What is the arrow pointing to?

Coracoacromial

What ligament is labeled 1?

Acromioclavicular

What ligament is labeled 2?

Coracoclavicular ligament, trapezoid ligament

What ligament is labeled 3?

Coracoclavicular ligament, conoid ligament

What ligament is labeled 4?

Fibrous joint capsule

What is the arrow pointing to?

Sternoclavicular ligament

What is labeled 5?

Clavicle

What is commonly fractured by a fall on an outstretched arm and hand?

Middle third

What is the most common fracture site of the clavicle?

Clavicle, sternum, and costal cartilage of true ribs

What is the origin of the pectoralis major muscle?

Crest of greater tubercle of humerus

What is the insertion of the pectoralis major muscle?

Medial pectoral nerve C8-T1 and lateral pectoral nerve C5-C7

What are the nerve innervations of the pectoralis major muscle?

Medial rotation, adduction, and flexion of arm/humerus

What are the actions of the pectoralis major muscle?

Ribs 3-5

What is the origin of the pectoralis minor muscle?

Coracoid process of scapula

What is the insertion of the pectoralis minor muscle?

Medial pectoral nerve C8-T1

What is the nerve innervation of the pectioralis minor muscle?

Stabilizes and protracts scapula

What are the actions of the pectoralis minor muscle?

Ribs 1-9

What is the origin of the serratus anterior muscle?

Medial border of scapula

What is the insertion of the serratus anterior muscle?

Long thoracic nerve C5-C7

What is the nerve innervation of the serratus anterior muscle?

Protracts scapula and stabilizes medial and inferior angle of scapula

What are the actions of the serratus anterior muscle?

Clavicle, acromion, and scapular spine

What is the origin of the deltoid muscle?

Deltoid tuberosity of humerus

What is the insertion of the deltoid muscle?

Axillary nerve C5-C6

What is the nerve innervation of the deltoid muscle?

Flexion, extension, abduction, and rotates humerus/arm

What are the actions of the deltoid muscle?

Inferior angle of scapula

What is the origin of the teres major muscle?

Intertubercular sulcus of humerus

What is the insertion of the teres major muscle?

Medial rotation, adduction, and extension of arm/humerus at the glenohumeral joint

What are the actions of the teres major muscle?

Lower subscapular nerve C5-C6

What is the nerve innervation of teres major?

Supraspinatus, Infraspinatus, teres minor, Subscapularis (SItS)

What are the muscles of the rotator cuff?

Supraspinous fossa of scapula

What is the origin of the supraspinatus muscle?

Greater tubercle of humerus

What is the insertion of the supraspinatus muscle?

Suprascapular nerve C5-C6

What is the nerve innervation of the supraspinatus muscle?

Initiates abduction of arm at glenohumeral joint

What is the action of the supraspinatus muscle?

Infraspinous fossa of scapula

What is the origin of the infraspinatus muscle?

Greater tubercle of humerus

What is the insertion of the infraspinatus muscle?

Suprascapular nerve C5-C6

What is the nerve innervation of the infraspinatus muscle?

Lateral rotation of arm at glenohumeral joint

What is the action of the infraspinatus muscle?

Lateral border of scapula

What is the origin of the teres minor muscle?

Greater tubercle of humerus

What is the insertion of the teres minor muscle?

Axillary nerve C5-C6

What is the nerve innervation of the teres minor muscle?

Lateral rotation of arm at glenohumeral joint

What is the action of the teres minor muscle?

Subscapular fossa of scapula

What is the origin of the subscapularis muscle?

Lesser tubercle of humerus

What is the insertion of the subscapularis muscle?

Upper and lower subscapular nerve C5-C6

What is the nerve innervation of the subscapularis muscle?

Medial rotation of arm at glenohumeral joint

What is the action of the subscapularis muscle?

Serratus anterior

What muscle is labeled 1?

Pectoralis major

What muscle is labeled 2?

Pectoralis minor

What muscle is labeled 4?

Deltoid

What is this muscle?

Pectoralis minor

What muscle is this?

Lateral thoracic

What artery is labeled 1?

Serratus anterior

What muscle is labeled 2?

Long thoracic

What nerve is labeled 3?

Subscapularis

What muscle is labeled 1?

Supraspinatus

What muscle is labeled 2?

Infraspinatus

What muscle is labeled 3?

Teres minor

What muscle is labeled 4?

Triangular space

What space is the green arrow pointing to?

Circumflex scapular artery

What does the triangular space contain?

Teres minor

What muscle is the superior border of the triangular space?

Teres major

What muscle is the inferior border of the triangular space?

Long head of triceps brachii

What muscle is the lateral border of the triangular space?

Quadrangular space

What space is the blue arrow pointing to?

Axillary nerve, posterior circumflex humeral artery and vein

What does the quadrangular space contain?

Teres minor

What muscle is the superior border of the quadrangular space?

Teres major

What muscle is the inferior border of the quadrangular space?

Surgical neck of humerus

What bone is the lateral border of the quadrangular space?

Long head of triceps brachii

What muscle is the medial border of the quadrangular space?

Triangular interval

What space is the pink arrow pointing to?

Radial nerve and deep brachial artery

What does the triangular interval contain?

Teres major

What muscle is the superior border of the triangular interval?

Long head of triceps brachii

What muscle is the medial border of the triangular interval?

Lateral head of triceps brachii

What muscle is the lateral border of the triangular interval?

Ventral rami C8-T1

What spinal nerves make up the medial pectoral nerve?

Pectoralis major and minor

What muscles does the medial pectoral nerve innervate?

Ventral rami C5-C7

What spinal nerves make up the lateral pectoral nerve?

Pectoralis major

What muscles does the lateral pectoral nerve innervate?

Pectoralis major and minor

What muscles does the thoracoacromial artery supply blood to?

Second part of axillary artery

What is the thoracoacromial artery a branch of?

Ventral rami C5-C7

What spinal nerves make up the long thoracic nerve?