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Functional Anatomy AKA Intro to Kineseology
Exam #2- Shoulder Complex
43
Anatomy
Undergraduate 1
11/04/2010

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Cards

Term
sternum
Definition
Aka breast bone. Located @ midpoint of anterior throax.
Term
manubrium
Definition
superior portion of the sternum that articulate with the clavicle forming the sternoclavicular joint (SC Joint)
Term
Body of the Sternum
Definition
Middle portion of the sternum. Serves as the anterior attachment for ribs 2-7.
Term
Xiphoid Process
Definition
Means "Sword Shaped". Inferior tip of the sternum.
Term
Clavicle
Definition
AKA collar bone. S-shaped bone that acts as a rod linking the scapula to the sternum.
Term
Acromial End
Definition
Flattened lateral portion that articulates with the acromion of the scapula forming the acromioclavicular joint.
Term
Sternal End
Definition
medial end of the clavicle. Articulates with the manubrium of the sternum, forming the sternoclavicular joint.
Term
Scapula
Definition
AKA Shoulder Blade. Highly movile triangular shaped bone resting on the posterior side of the thorax.
Term
Subscapular Fossa
Definition
Concave Anterior aspect of the Scapula that allows the scapula to glide smoothly along the convex posterior rib cage.
Term
Glenoid Fossa
Definition
Slightly concave, oval shaped surface of the Scapula that accepts the head of the humerous, making the glenohumeral joint.
Term
Superior and Inferior Glenoid Tubercles
Definition
Border the Glenoid Fossa respectively and serve as proximal attatchments for the long heads of the biceps and triceps.
Term
Scapulaer Spine
Definition
Divides the posterior aspect of the Scapula into Supraspinatous Fossa and Infraspinatous Fossa.
Term
Supraspinatous Fossa
Definition
Concave superior posterior aspect of the of the scapula. Located above (superior) to the Scapular Spine.
Term
Infraspinatous Fossa
Definition
Concave posterior inferior aspect of the scapula. Located below (inferior) to the scapular spine.
Term
Acromion Process
Definition
Wide, flat projection of bone from most superior-lateral aspect of the scapula. Forms a functional "roof" over humeral head to help protect delicate structures with in.
Term
Inferior Angle
Definition
Tip of the scapula. Medial and lateral borders meet here. Helps to track scapular motion.
Term
Proximal Humerus
Definition
Proximal portion of humerus. Point of attachment for a multitude of ligaments and muscles.
Term
Humeral Head
Definition
nearly 1/2 of a full sphere that articulates with the glenoid foss, forming the glenohumeral joint.
Term
Lesser Tubercle
Definition
A sharp, anterior projection of bone just below the humeral head.
Term
Greater Tubercle
Definition
Larger, more rounded lateral projection of bone.
Term
Intertubercular groove/bicipital groove
Definition
Divides greater and lesser tubercles. Houses tendon of long head of the biceps.
Term
Deltoid Tuberosity
Definition
The distal insertion of all three heads of the deltoid muscle. Located laterally, middle portion of shaft of humerus.
Term
Radial (Spiral) Groove
Definition
Runs obliquely across posterior surface of humerus. The radial nerve follows this groove and helps define the distal attachment for lateral and medial heads of the triceps.
Term

Sternoclavicular Joint

SC Joint

Definition

Articulation of medial aspect of the clavicle with the sternum. Provides the only direct bony attachment of the upper extemity to the axil skeleton.

-Allows motion in all 3 Cardinal Planes

-Saddle Joint

-Motions include elevation and deppression, protraction and retraction, and axil rotation.

All movements of the shoulder girdle originate at the SC Joint.

Term
Sternoclavicular Ligament
Definition
Firmly joins the clavicle to the manubrium.
Term
Interclavicular Ligament
Definition
Spans the jugular notch, connecting the superior medial aspects of the clavicles.
Term
Costoclavicular Ligament
Definition
Attaches teh clavicle to the costal cartilage of 1st rib and limits extremes of all clavicular motion except depression.
Term
Articular Disk
Definition
Acts as a shock absorber between clavicle and sternum; improves joint congruency.
Term
Scapulothorac Joint
Definition

Not a true joint. Refers to junction of anterior aspect of the scapula on posterior thorax (rib cage). Normal movement and posture of this are essential to normal function of shoulder.

-Motions include elevation and depression, retraction and protraction, and upward and downward rotation.

Term

Acromioclavicular Joint

(AC Joint)

 

Definition

Plane joint by articulation of lateral clavicle and acromion process of the scapula. Many strong forces transferred across AC joint, requiring several stablizing structures.

-Motion in all 3 planes. Up and down rotation, rotation in horizontal plane, and rotation in sagittal plane.

Term
Acromioclavicular Ligament
Definition
Joins clavicle to acromion; helps prevent dislocation and links motion of the scapula to clavicle.
Term
Coracoclavicular Ligament
Definition
Conoid and trapezoid ligaments. Together they suspend the scapula from the clavicle and prevent dislocation.
Term
Coracoacromial Ligament
Definition
Attaches the coracoid process to acromion process. One of few ligaments that attatches both proximally and distally to same bone with acromion, completing the coracoacromial arch.
Term
Coracoacromial Arch
Definition
The functional "roof" protecting head of humerus.
Term

Glenohumeral Joint

(GH Joint)

Definition
Articulation of humeral head with glenoid fossa of scapula. Alows for abundant motion in all three planes, but not a high degree of stability.
Term
Rotator Cuff
Definition
Pertains four muscles: supraspinatus, infraspinatus, subscaularis, tres minor. They surround the humeral head and hold against gleniod fossa.
Term
Capsular Ligaments
Definition
Thin fiberous capsule including the superior, middle, and inferior glenohumeral ligaments. The loose capsule attatches between the rim of the glenoid fossa and anatomic neck of the humerus.
Term
Coracohumeral Ligaments
Definition
Attaches between coracoid process and anterior side of greater tubercle. Helps limit extremes of external rotation, flexion and extension, and inferior displacement of humeral head.
Term
[image]
Definition

1. Acromioclavicular Joint

2. Glenohumeral Joint

3.Coracoclavicular Ligaments

4.Coracoacromial Ligaments

5. Scapula

6. Greater Tubercle

7.Superior Acromioclavicular Ligament

8.Coracohumeral Ligament

9.Lesser Tubercle

10. Humerus

11. Clavicle

12. Acromion

Term
[image]
Definition

1. Acromion Process

2. Glenoid Fossa

3. Subscapular Fossa

4. Inferior Angle

5. Superior Angle

6.Auxillary/Lateral Border

7. Medial/Vertebral Border

8. Coracoid Process

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