Action of ALL REQUIRED MUSCLES and Additional
Possible Questions
Origin, Insertion, Action of the Masseter
Origin- Maxiallae and zygomatic arch
Insertion- Mandible
Action- Elevate mandible, CHEW
Origin, Insertion, Action of the Orbicularis Oris
Origin- Muscles around the mouth
Insertion- Skin on lips
Action- Open/Close mouth, kiss
Origin, Insertion, Action of the Sternocleidomastoid
Origin- Sternal Head: Top of Manubrium and Clavicular Head: Medial Clavicle
Insertion- Mastoid Process
Action- Lateral Flex of head and neck to same side, Rotate to opposite side
Origin, Insertion, Action of the Superior Trapezius
Origin- Occipital bone
Insertion- Acromion and spine of scapula
Action- Shrug
Origin, Insertion, Action of Medial Trapezius
Origin- Spinous C1-7
Insertion- Acromion and spine of scapula
Action- Retract Scapula
Origin, Insertion, Action of Inferior Trapezius
Origin- Spinous T1-12
Insertion- Inferior angle of scapula
Action- Depress scapula
Origin, Insertion, Action of the Rhomboid Minor
Origin- Spinous process C7 and T1
Insertion- Upper portion of medial border of scapula
Action- Adduct, Elevate, downward rotation of scapula
Origin, Insertion, Action of the Rhomboid Major
Origin- Spinous process of T2-T5
Insertion- Medial border of scapula
Action- Adduct, elevate, downward rotation of scapula
Origin, Insertion, Action of the Anterior Deltoid
Origin- Clavicle
Insertion- Deltoid tuberosity
Action- Flexion
Origin, Insertion, Action of Middle Deltoid
Origin- Acromion
Insertion- Deltoid Tuberosity
Action-Abduction
Origin, Insertion, Action of Posterior Deltoid
, Origin- Spine of scapula
Insertion- Deltoid tuberosity
Action- Extension
Origin, insertion, Action of the Pectoralis Major
Origin- clavicle, rib 1-4, sternum
Insertion- greater tubercle of humerus
Action- Adduct humerus, intertrochanter, flexion
Origin, Insertion, Action of the Pectoralis Minor
Origin- Ribs 2-5
Insertion- Coracoid Process
Action-Protract scapula
Origin, Insertion, Action of the Serratus Anterior
Origin- Ribs 1-8
Insertion- vertebra border of scapula
Action- Protraction of scapula (punction)
Origin, Insertion, Action of the Latissimus Dorsi
Origin- T7-L5, Sacrum, Ilium
Insertion- Intertubercular Sulcus of humerus
Action-Extension of humerus climbing
Origin ,Insertion, Action of the Rectus Abdominus
Origin- pubic symphysis
Insertion- xyphoid process
Action- Trunk flexion, does reverse
Origin, Insertion, Action of the Long Biceps Brachii
Origin- Superior Glenoid Labrum
Insertion- Radial Tuberosity
Action- Elbow flexion
Origin, Insertion, Action of Short Biceps Brachii
(CRF)
Origin- Coracoid Process
Insertion- Radial Tuberosity
Action- Elbow flexion
Origin, Insertion, Action of the Brachioradialis
(SSF)
Origin- Supracondylar ridge of humerus
Insertion- Styloid process of radius
Action- Elbow Flexion
Origin, Insertion, Action of the Brachialis
(ATF)
Origin- Anterior surface of humerus
Insertion- Tuberosity and coronoid process of ulna
Action - Elbow Flexion
Origin, Insertion, Action of the Lateral head Triceps Brachii
Origin- Posterior Humerus
Insertion- Olecranon
Action-Elbow Extension