Muscles Flashcards
Zygomaticus
Origin: Zygomatic Bone
Insertion: Orbicularis Oris
Action: Smiling
Masseter
Origin: Zygomatic Bone
Insertion: Angle of Mandible
Action: Chewing
Sternocleidomastoid
Origin: Manubrium, Clavicle
Insertion: Mastoid Process
Action: Neck Flexion
Digastric
Origin: Mandible
Insertion: Hyoid Bone
Action: Opens Mouth
Pectoralis Major
Origin: Clavicle, Sternum
Insertion: Upper Humerus
Action: Flexion & Medial Rotation of Arm
Deltoid
Origin: Clavicle, Scapula
Insertion: Deltoid Tuberosity of the Humerus
Action: Abduction of arm
Rectus Abdominus
Origin: Pubic Crest
Insertion: Xiphoid Process / Costal Cartilage
Action: Flexion of Spine
Trapezius
Origin: Spinous Processes of Vertebrae
Insertion: Spine of Scapula
Action: Adduct Scapula
Latissimus Dorsi
Origin: Vertebrae, Iliac Crest
Insertion: Upper Humerus
Action: Adducts Arm
Triceps Brachii
Origin: Glenoid Cavity, Posterior Humerus
Insertion: Olecranon Process
Action: Extends Forearm / Elbow
Biceps Brachii
Origin: Coracoid Process, Glenoid Cavity
Insertion: Radial Tuberosity
Action: Flexes Forearm / Elbow
Flexor Digitorum Superficialis
Origin: Medial Epicondyle of Humerus
Insertion: Phalanges 2-5
Action: Flexes Fingers
Extensor Digitorum
Origin: Lateral Epicondyle of Humerus
Insertion: Phalanges 2-5
Action: Extends Fingers
Rectus Femoris
Origin: Acetebulum / Ilium
Insertion: Patella / Tibial Tuberosity
Action: Extends Lower Leg / Knee
Biceps Femoris
Origin: Ischium and Upper Femur
Insertion: Head of Fibula and Condyle of Tibia
Action: Flexes Lower Leg / Knee
