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C HAPTER 4 The Pieces of the Body Puzzle: A Regional Approach Kinesiology Books Publisher1.

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Presentation on theme: "C HAPTER 4 The Pieces of the Body Puzzle: A Regional Approach Kinesiology Books Publisher1."— Presentation transcript:

1 C HAPTER 4 The Pieces of the Body Puzzle: A Regional Approach Kinesiology Books Publisher1

2 Axial Skeleton Head and neck Region Back Region Appendicular Skeleton Pectoral Girdle Scapulohumeral Region Upper Limb Pelvic Girdle Lower Limb T ABLE OF C ONTENTS T ABLE OF C ONTENTS Kinesiology Books Publisher2

3 Head and Neck Region Back Region A XIAL S KELETON Kinesiology Books Publisher3

4 Pectoral Girdle Scapulohumeral Region Upper Limb Pelvic Girdle Lower Limb A PPENDICULAR S KELETON Kinesiology Books Publisher4

5 LESSON 1: T HE L ANGUAGE OF A NATOMY LESSON 2 P ECTORAL G IRDLE AND SCAPULOHUMERAL R EGION Develop an understanding of the bones, muscles, and joints that make up the pectoral girdle of the appendicular skeleton, and apply knowledge of the pectoral girdle to injuries of the shoulder and rotator cuff. Kinesiology Books Publisher5

6 P ECTORAL G IRDLE Kinesiology Books Publisher6 Bones Muscles Joints

7 Kinesiology Books Publisher7 Pectoral Girdle Suspends the upper limb away from the chest wall Enables a great range of movement Pectoral Girdle Suspends the upper limb away from the chest wall Enables a great range of movement

8 Kinesiology Books Publisher8 B ONES Clavicle (collarbone) Articulates with sternum and scapula Only bone directly connecting upper and axial skeleton Scapula Has many muscle attachments to axial skeleton Clavicle Scapula

9 Kinesiology Books Publisher9 M USCLES Anterior Group Posterior Group

10 Kinesiology Books Publisher10 M USCLES : A NTERIOR Pectoralis major Two heads: 1)Clavicular head flexes and medially rotates shoulder joint 2)Sternal head extends from flexed position and medially rotates shoulder joint 1 2 Pectoralis minor Attachments Ribs 3-5 Coracoid process of the scapula Depresses and stabilizes scapula Serratus anterior Steadies and holds scapula forward against chest wall (protracts it) Actions: Rope climbing Butterfly stroke

11 Kinesiology Books Publisher11 M USCLES : P OSTERIOR TRAPEZIUS Upper fibres From skull to scapula Elevate scapula Shrugging your shoulders Middle (transverse) fibres From ligamentum nuchae of cervical vertebrae to scapula Retract the scapula Lower fibres From C7 – T12 to scapula Depress the scapula

12 Kinesiology Books Publisher12 M USCLES : P OSTERIOR Latissmus dorsi From lower thoracic vertebrae, iliac crest, and thoracolumbar fascia to intertubercular groove of the humerus Medially rotates, adducts, and extends humerus Teres major Medially rotates and adducts humerus Levator scapulae Rotates and elevates scapula Rhomboid muscles Helps with scapula retraction and holding against thoracic wall

13 Kinesiology Books Publisher13 J OINTS Sternoclavicular Only joint connecting pectoral girdle (clavicle ) and axial skeleton (sternum) Synovial joint strengthened by intracapsular disc and extrinsic ligaments Absorbs forces along clavicle Acromioclavicular Joint Connects clavicle’s lateral end and scapula’s acromion process Permits shoulder separations (e.g., in hockey, baseball, and football )

14 Lateral Muscles S CAPULOHUMERAL R EGION Kinesiology Books Publisher14 Superior and Posterior Muscles Anterior Muscles

15 Kinesiology Books Publisher15 M USCLES : A NTERIOR Subscapularis From anterior (costal) surface of scapula To lesser tubercle of humerus Adducts and medially rotates upper limb

16 Kinesiology Books Publisher16 M USCLES : S UPERIOR AND POSTERIOR Supraspinatus From supraspinous fossa of posterior scapula above scapular spine to humerus point Initiates upper limb abduction joint Infraspinatus and teres minor From posterior scapula surface below scapular spine to greater tubercle of humerus Adduct and laterally rotate upper limb

17 Kinesiology Books Publisher17 M USCLES : R OTATOR C UFFS

18 Kinesiology Books Publisher18 Shoulder joint is the most mobile and unstable joint Allows dynamic and powerful movements Requires to keep head of humerus centralized in its socket Common injury = rotator cuffs tear Rotator Cuffs Tear

19 Kinesiology Books Publisher19 M USCLES : L ATERAL Deltoids Insert to deltoid tuberosity of humerus Act on shoulder, move upper limb Anterior fibres From clavicle Flex and medially rotate Middle fibres From acromion of scapula Abduct Posterior fibres From spine of scapula Extend and laterally rotate

20 Lesson 2 Wrap Up Pectoral Girdle Kinesiology Books Publisher20 Student Workbook activities o – Review Your Key Terms (p. 34) o (A-D) – Pectoral Girdle (pp ) o (A-B) – Muscles of the Scapulohumeral Region (pp


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