| Question | Answer |
| Orbicularis oculi | Action: Closes eye
Origin: Frontal and maxillary bones
Insertion: Tissue around eyelid |
| Orbicularis oris | Action: Closes lips
Origin: Maxilla and mandible
Insertion: Tissue around mouth |
| Zygomatic Major | Action: Draws corners of mouth upward
Origin: Zygomatic bone
Insertion: Skin at corners of mouth |
| Buccinator | Action: Compresses cheek against teeth
Origin: Maxilla and mandible
Insertion: orbicularis oris |
| Masseter | Action: Closes jaw
Origin: Zygomatic bone
Insrtion: Mandible |
| Frontalis | Action: Raises Eyebrows
Origin: Gala Aponeurotica
Insertion: Skin of eyebrows |
| Temporalis | Action: Closes jaw Origin: Temporal bone Insertion: Mandible |
| Scalenes | Action: Flexes neck Origin: Transverse process of cervical vertebrae
Insertion: Flexes neck |
| Sternocleidomastoid | Action: Flexes neck
Origin: Manubrium of sternum and clavical
Insertion: Mastoid process of temperal bone |
| External intercostals | Action: Aids in inspiration
Origin: Inferior border of rib above
Insertion: Superior border of rib below |
| Internal intercostals | Action: Aids in inspiration
Origin: Superior border of rib below
Insertion:Inferior border of rib above |
| Diaphragm | Action: Inspiration
Origin: Sternum, last six ribs and lumbar vertbrae
Insertion: Central tendon |
| Pectoralis Major | Action: flexes arm
Origin: Sturnum, clavical, ribs 1-6
Insertion: Intertubercular sulcus of humerus |
| Serratus anterior | Action: Protracts Scapula
Origin: Ribs 1-8
Insertion: Vertebral border of scapula |
| Trapezius | Action: Elevates Apex of shoulder
Origin: Occiptal bone, C7 and all thoracic vertebrae
Insertion: Clavical, acromion and spine of scapula |
| Rhomboid major | Action: Retracts scapula
Origin: Spinous process of T2-T5 vertebrae
Insertion: Vertebral border of scapula |
| Latissismus dorsi | Action: Extends arm Origin: T7-L5 vertebrae, iliac crest, last 3-4 ribs Insertion: Intertubercular sulcus of humerus |
| External oblique | Action: laterally flexes trunk
Origin:last 8 ribs
Insertion: Linea alba, pubic crest and iliac crest |
| Internal oblique | Action: Compresses abdominal contents
Origin: Iliac crest and inguinal ligament
Insertion: Linea alba, pubic crest and last 3 ribs |
| Transverse abdominis | Action: Compresses abdominal contents
Origin: Inguinal ligament, last 6 ribs, and iliac crest
Insertion: Linea alba, and pubic crest |
| Rectus abdominis | Action: Flexes vertebral column
Origin: Pubic crest and symphysis
Insertion: Xiphoid process and ribs 5-7 |
| Deltoid | Action: Flexes arm
Origin: Clavical, acromion & spine of scapula
Insertion: Deltoid tuberosity of humerus |
| Biceps brachii | Action: Flexes arm
Origin: Intertubercular sulcus of humerus, corocoid process of scapula
Insertation: Radial tuberosity |
| Triceps brachii | Action: Extends arm
Origin: Glenoid cavity and humerus
Insertion: Olecranon process of ulna |
| Flexor carpi radialis | Action: flexes wrist
Origin: Medial epicondyle of humerus
Insertion: Metacarpals 2-3 |
| Flexor carpi ulnaris | Action: Flexes wrist
Origin: Medial epicondyle of humerus & olecranon process of ulna
Insertion: Metacarpal 5, pisiform & hamate bones |
| Palmaris longus | Action: Flexes wrist
Origin: Medial epicondyle of humerus
Insertion: Skin and fascia of palm |
| Extensor carpi radialis | Action: Extends wrist
Origin: Humerus
Insertion: Metacarpal 2 |
| Extensor carpi ularis | Action: Extends wrist
Origin: Lateral epicondyle of humerus
Insertion: Metacarpal 5 |
| Extensor digitorum | Action: Extends fingers Origin: Lateral epicondyle of humerus Insertion: Phalanges 2-5 |
| Gluteus Maximus | Action: Extends thigh Origin: Scrum,coccyx, and ilium Insertion: Gluteal tuberosity of femur |
| Tensor fascia latae | Action: Abducts thigh
Origin: Iliac crest and anterior superior iliac crest
Insertion: Iliotibial band |
| Gracilis | Action: Flexes knee
Origion: Pubis
Insertion: Tibia |
| Sartorious | Action: Flexes knee
Origin: Anterior superior iliac spine
Tibia: Tibia |
| Biceps femoris | Action: Extends Thigh
Origin: Ischial tuberosity and femur
Insertion: Head of fibula & lateral condyle of tibia |
| Semitendinosus | Action: Extends thigh
Origin: Ishial tuberosity
Insertion: Tibia |
| Semimembranousus | Action: Extends thigh Origin: Ischial tuberosity
Insertion: Medial condyle of tibia & lateral condyle of femur |
| Rectus femoris | Action: Extends knee
Origin: Anterior inferior iliac spine and the acetabulum
insertion: Tibial tuberosity and patella |
| Vastus lateralis | Action: Extends knee
Origin: Greater trochanter & linea aspera
Insertion: Tibial tuberosity and patella |
| Vastus Medialis | Action: Extends knee
Origin: Linea aspera
Insertion: Tibial tuberosity & patella |
| Vastus intermedius | Action: Extends knee
Origin: Femur
Insertion: Tibial tuberosity & patella |
| Tibials anterior | Action: Dorsiflexes foot
Origin: Tibia
Insertion: 1st cuniform & metatarsal 1 |
| Extensor digitorum longus | Action: Doriflexes foot
Origin: Tibia and fibula
Insertion: Phalanges of toes 2-5 |
| Gastrocnemius | Action: Plantarflexion Origin: Medial and lateral condyles of femur Insertion: Calcaneus |
| Soleus | Action: Plantar flexion Origin: Tibia and fibula Insertion: Calcaneus |
| Fibularis Longus | Action: Plantarflexion Origin: fibula Insertion: Metatarsal 1 and medial cuneiform |
