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MAK 111 - Muscle Group 1 - Origins, Insertions & Actions
Flashcards & Quiz for MAK 111 Muscles, Group 1 (from PowerPoint Presentation 2), Origins Insertions & Actions
24
Anatomy
Undergraduate 1
01/18/2011

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Term
Biceps Brachii (Origin)
Definition
Long-head: Supraglenoid tubercle of scapula; Short-head: Corocoid process of scapula
Term
Biceps Brachii .(Insertion)
Definition
Radial tuberosity and bicipital aponeurosis (overlying the common flexor tendon)
Term
Biceps Brachii _(Action)
Definition
Shoulder: Flexion, abduction, adduction; Forearm: Flexion, supination
Term
Deltoid (Origin)
Definition
Lateral 1/3 of clavicle; Acromion process; Spine of the scapula
Term
Deltoid .(Insertion)
Definition
Deltoid tuberosity
Term
Deltoid _(Action)
Definition
Shoulder: Flexion & extension; abduction & adduction; internal & external rotation; horizontal abduction
Term
Latissimus Dorsi (Origin)
Definition
Spinous processes of T7 – L5; Posterior iliac crest; Posterior sacrum via thoracolumbar aponeurosis
Term
Latissimus Dorsi .(Insertion)
Definition
Medial lip of the bicipital groove of the humerus
Term
Latissimus Dorsi _(Action)
Definition
Shoulder: Adduction, extension, internal rotation
Term
Pectoralis Major (Origin)
Definition
Medial clavicle; sternum; costocartilage of ribs 1-7
Term
Pectoralis Major .(Insertion)
Definition
Lateral lip of the bicipital groove of the humerus
Term
Pectoralis Major _(Action)
Definition
Shoulder: Flexion & extension; adduction & abduction; internal rotation, horizontal adduction
Term
Serratus Anterior (Origin)
Definition
Outer surfaces of upper 9 ribs
Term
Serratus Anterior .(Insertion)
Definition
Costal surface of the medial border of the scapula
Term
Serratus Anterior _(Action)
Definition
Scapula: Protraction, depression, upward rotation
Term
Teres Major (Origin)
Definition
Inferior border of the scapula
Term
Teres Major .(Insertion)
Definition
Medial lip of the bicipital groove of the humerus
Term
Teres Major _(Action)
Definition
Shoulder: Adduction, extension, internal rotation
Term
Trapezius (Origin)
Definition
1: External occipital protuberance, medial 1/3 of superior nuchal line of the occiput, ligamentum nuchae, and SP of C7. 2: SP of T1 – T5. 3: SP of T6 – T12.
Term
Trapezius .(Insertion)
Definition
Lateral 1/3 of clavicle; Acromion process; Spine of the scapula
Term
Trapezius _(Action)
Definition
Head/Neck: Extension, lateral flexion, rotation to same side; Scapula: Elevation, retraction, upward rotation
Term
Triceps Brachii (Origin)
Definition
Long-head: Infraglenoid tubercle of scapula; Lateral-head: proximal ½ of the posterior shaft of the humerus; Medial-head: distal ½ of the posterior shaft of the humerus
Term
Triceps Brachii .(Insertion)
Definition
Olecranon process of the ulna
Term
Triceps Brachii _(Action)
Definition
All heads: Extension of the elbow; Long-head: Extension & adduction of shoulder
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