Bio47S11HO09

Bio47S11HO09 - Biology 47 - Human Anatomy Lecture 9...

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1 Biology 47 - Human Anatomy Lecture 9 Articulations Specialized Synovial Joints (Cont.) 2. Glenohumeral Joint (Shoulder) : • Joint Characteristics : Structural: Functional : • Articulating surfaces : a. Humerus : b. Scapula : Stabilizing Structures : 1. Girdle Bones : Stabilize extremity a. Acromion of Scapula : Stabilizes : b. Corocoid of Scapula : Stabilizes : 2. Articular Capsule : • Loosely binding capsule: Provides Stabilizes ONLY when joint reaches : 3. Accessory Ligaments : Intrinsic and Extrinsic a. Glenohumeral ligaments : Intrinsic b. Extrinsic: Extra-capsular Ligaments: 1. Coracoacromial Ligament Strengthen : 2. Coracoclavicular Ligaments ( ) Stabilize :
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3. Acromioclavicular Ligament Stabilize : Acromioclavicular Ligament: Sprain “S oulder separation” Most commonly : 4. : Stabilize extremity Provide Greatest Degree of : Rotator Cuff Muscles ”: 4 muscles : Supraspinatus, Infraspinatus, Teres Minor, Subscapularis Hold humeral head against : Tendons extend around the : Tendons form the: 5. Accessory Cartilage : Stabilize extremity Glenoid Labrum : labrum = “lip” Fibrocartilage “lip” : Adding : 6. Bursae : Reduce friction where muscle & tendons : 3. Tibiofemoral Joint (Knee Joint) • Joint Characteristics : Structural: Functional : Bony articulations :
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This note was uploaded on 09/02/2011 for the course BIO 47 taught by Professor Peters during the Spring '11 term at West Valley.

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Bio47S11HO09 - Biology 47 - Human Anatomy Lecture 9...

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