a. Sternoclavicular b. Acromioclavicular c. Glenohumeral 2. Functional Joints d. Scapulothoracic e. Suprahumeral/ Subacromial f. Bicipital Groove ANATOMY OF THE SHOULDER AND SCAPULA BONES Bone | STERNUM | CLAVICLE | SCAPULA | HUMERUS (Proximal-to-mid-humerus) | Bony Landmarks | 1. Jugular Notch 2. Clavicular Notch 3. Notch for 1st costal cartilage 4. Manubrium 5. Sternal angle and manubriosternal joint 6. Body 7. Notch for 2nd
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The scapula is defined as a large triangular flattened bone lying over the ribs‚ posterior on either side‚ articulating laterally with the clavicle at the acromioclavicular joint and the humerus at the glenohumeral joint. It forms a functional joint with the chest wall‚ the scapulothoracic joint (Dirckx‚ 2001). Also known as the shoulder blade‚ unlike most bones of the body which serve as rigid spacers‚ is one of the few bones that act like "anchors" for soft tissues and other bones (Clay & Pounds
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Attaches shoulder to axial skeleton‚ force transmission to scapula‚ contributes to ROM * Palpation Scapula * Between T2 and T7 * Landmarks * Primary function: muscle attachment * Palpation: Acromion‚ Coracoid Process Acromion Variations (Bigliani) Glenoid Fossa Plane of the Scapula * Superior aspect 30◦- 45◦ a * anterior to frontal plane * Arm elevation in plane vs out of plane of scapula * Try this motion! Humerus * Structures *
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Origin: Scapula and Clavicle/Acromion e. Insertion: Humerus (shared) f. Function: Abducts Humerus 3. Biceps Brachii and Brachialis g. Origin: Scapula and Humerus h. Insertion: Radius and Ulna i. Function: Flexion of elbow 4. Rhomboid Major and Rhomboid Minor j. Origin: Spinous processes of T2 to T5 and C7 to T1 vertebrae k. Insertion: Medial border of Scapula (inferior and superior) l. Function: Adducts and Fixate Scapula 5. Internal
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-Clavicle-acromion process-spine of scapula | -head extension/abduction-scapula rotation/adduction-fix scapula | POSTERIORDiamond shape | Upper | Occupital boneCervical spine | -clavicle-acromium process | -elevation-upward rotation | | Middle | Thoracic spine | Spine of scapula | Retraction | Runs horizontally | Lower | Lower thoracic spine | Base of spine of scapula | -depression-upward rotation | -runs upward | DeltoidShoulder. | -clavicle-acromion process-spine of scapula | -deltoid tuberosity of
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Muscle Description Muscles of the Head: Facial Expression Origin Insertion Action bipartite muscle‚ Epicranius:includes frontalis connected by galea & occipitalis aponeurotica covers forehead‚ no bony attachments galea aponeurotica skin of eyebrows and root of raises eyebrows (as in surprise); nose wrinkles forehead skin horizontally Occipitalis back of head occipital and temporal bones galea aponeurotica pulls scalp posteriorly Corrugator supercilii
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KIN 2500 -- MUSCLES O: origin I: insertion A: action N: Lever: rigid structure that moves around a fixed point fulcrum * Effort: causes the movement; force that is due to the muscular contraction; you only get motion when the effort that is applied at the insertion point exceeds the load * Load/Resistance: opposes that movement * 1st class levers: not very common; fulcrum is fixed between effort and load * 2nd class levers: standing on tip toes; fairly uncommon; the load is
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CHAPTER 3: THE MUSCULAR SYSTEM Three Types of Muscle * Muscle tissue is a collection of cells that shorten during contraction which create tension that results in movement * Tendons are touch bands of connective tissue that join muscle with bones Skeletal muscles * Muscles that are attached to bone (by tendons and other tissue) * Comprise 30 to 40% of human body weight * Humans have conscious control (conscious muscle) over these muscles (the brain can tell them what to do)
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Breanna Dickens 1-28-14 A&P: N. Momeny “Hassan’s Story” A) Which clue would tell Stefan which scapular surface was anterior and which was posterior? What is the name of the shallow‚ oval socket of the scapula that Stefan placed next to the humerus? -The medial border of the scapula is the longest of the three borders‚ and extends from the superior to the inferior angle. It is arched‚ intermediate in thickness between the superior and the axillary borders
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Chapter 10 Muscles 1) The study of the muscular system is known as a) kinesiology. b) pathophysiology. c) myology. d) biology. e) neurology. 2) All of the following are functions of muscles except a) stability. b) heat production. c) control of openings. d) secretion. e) respiration. 3) What term best describes the relationship between the pronator teres and supinator? a) Fixators b) Antagonists c) Synergists d) prime movers e) depressors 4) Muscle fibers are arranged in
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