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Ch10 Muscle list
Identify origin/ insertion/action
| 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 |
Created by:
hellokittygirl1989
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