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Full Torso
BIO 201 Mucle Handout
Term | Definition |
---|---|
Origin: Clavicle, Sternum, & Costal Cartilage of Upper Ribs Insertion: Intertubercular Groove of Humerus Action: Flexes, Adducts, & Rotates Arm Medially | Pectoralis Major |
Origin: Sternal End of Upper Ribs Insertion: Coracoid Process of Scapula Action: Pull Scapula Forward and Downward or Raises Ribs | Pectoralis Minor |
Origin: Outer Surface of Upper Ribs Insertion: Ventral Surface of Scapula Action: Protracts (Abducts) Scapula | Serratus Anterior |
Origin: Inferior Portion of Rib Insertion: Superior Rib Beneath Action: Elevates Ribcage | External Intercostals |
Origin: Spines of Sacral, Lumbar & Lower Thoracic Vertebrae, Iliac Crest and Lower Ribs Insertion: Intertubercular Groove of Humerus Action: Extends, Adducts, & Medially Rotates Arm or Pulls Shoulder Downward & Back | Latissimus Dorsi |
Origin: Crest of Pubis & Symphysis Pubis Insertion: Xiphoid Process of Sternum & Costal Cartilage Action: Tenses Abdominal Wall & Compresses Abdominal Content/ Flexes Torso | Rectus Abdominis |
Origin: Superior Portion of Rib Insertion: Inferior Rib Above Action: Depresses Ribcage | Internal Intercostalis |
Origin: Costal Cartilage, Lumbar Vertebrae, Ilium Insertion: Linea Alba Action: Tenses Abdomen | Transversus Abdominus |
Origin: Ribs, Sternum, Vertebra Insertion: Central Tendon of Diaphragm Action: Inhalation (Respiration) | Diaphragm |