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,What is the origin of the Long Head of Triceps Brachii? Infraglenoid tubercle - Scapulae
What are the actions of the lower trapezius? 4 IRUDE 1. Inferior Stabilization of Scapula
2. Retraction
3. Upward Rotation
4. Depression
5. Extension (assists the spine)
Origins Rhomboid Minor (2) 1. C7 T1 Spinous processes
2. Ligamentum Nuchae - Lower Part
Insertion Middle Trapezius (1) Spine of Scapula Superior Border
Origin Supraspinatus (1) Supraspinous fossa medial 2/3
Action of External Intercostals Elevates Ribs during Inspiration
Origin of External Intercostals Inferior border of rib above
,Ventral Near Front of Body
Opposite of Dorsal
Anterior
Actions Levatores Costarum Longis (4) REEL 1. Spinal Rotation to other Side
2. Elevates Ribs during Inspiration
3. Extension Spine
4. Lateral Flexion of Spine
Actions Gemellus Superior (3) HAL 1. Horizantal Extension
2. Abduction - Flexed thigh at Hip
3. Lateral Roation - Extended thigh at hip
Actions Upper Trapezius (3) RUE 1. Rotation Upward Scapulae
2. Elevation Scapulae
3. Retraction (along w/ other Trapezius)
Insertion Lower Trapezius (1) Spine of Scapulae Medial 1/3
, Serratus Anterior Actions (3) PUS 1. Protraction Scapulae
2. Upward rotation Scapulae
3. Stabilization of MEDIAL /vertebral border of scapula THORACIC CAGE along
with RHOMBOIDS and MIDDLE trapezius
Adductor Longus Actions (3) FAM 1. Flexion thigh at Hip (Assists)
2. Adduction
3. Medial Rotation
Isotonic contraction CONSTANT TENSION in muscle as it changes in LENGTH. Can be eccentric or
concentric.
isometric contraction Generates Force in muscle with no change in length. Ex. Grip Strength
Concentric Contraction Muscles SHORTEN while generating force overcoming resistance.
Eccentric Contraction (3) 1) Muscle LENGTHENS while it's still generating force. 2) The resistance is greater
than the force generated. 3) Can be voluntary or involuntary.