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Myo1
Muscles, O, I & Actions
| Question | Answer | ||
|---|---|---|---|
| Medial Pterygoid | Pterygoid process, palatine bone and maxilla | Ramus and angle of mandible | Elevates and protracts mandible; Moves jaw laterally |
| Lateral Pteryogid | Greater wing of sphenoid bone and pterygoid process | mandibular condyle | Depresses and protracts mandible; Moves jaw laterally |
| Zygomaticus Major | Zygomatic bone | Orbicularis Oris | Smiling |
| Orbicularis Oculi | Bones of orbit | Tissue of eyelid | Close eye |
| Splenius Capitus | Spinous process of C7, T1-T3 | Superior nuchal line and mastoid process | Extends and rotate head; hyperextend neck |
| Erector Spinae | Ribs, vertebrae, sacrum, and ilium | Ribs, vertebrae, skull | Extension of vertebral column |
| Sternocleidomastoid | Sternum and clavicle | Mastoid process and superior nuchal line | Flexes head bilaterally, rotates head unilaterally |
| Serratus Anterior | First 8-9 ribs | Medial border of scapula | Pulls shoulder forward; abducts and rotates it forward |
| Pectoralis Minor | Ribs 3-5 | Coracoid process of scapula | Depresses shoulder; draws shoulders forward |
| Trapezius | Spines of C7-T12 | Clavicle and spine of scapula | Elevates, adducts and depresses scapula |
| Levator Scapulae | First 3-4 cervical vertebrae | Superior angle of scapula | Elevates scapula |
| Rhomboideus Major | Spines of T2-T5 | Vertebral border of scapula | Elevates and adducts scapula |
| Rhomboideus Minor | Spines of C7 and T1 | Medial border of scapula | Elevates and adducts scapula |
| Supraspinatus | Supraspinous fossa of scapula | Greater tubercle of humerus | Abducts arm; slight lateral rotation |
| Infraspinatus | Infraspinous fossa of scapula | Greater tubercle of humerus | Rotates humerus laterally; slight adduction |
| Teres Major | Inferior angle of scapula | Proximal end of humerus | Extends, adducts and medially rotates humerus |
| Teres Minor | Axillary border of scapula | proximal end of humerus | Adducts and laterally rotates humerus |
| Coracobrachialis | Coracoid process of scapula | Middle medial border of humerus | Flexes and adducts arm |
| Deltoid | Clavicle and spine of scapula | Deltoid tuberosity of humerus | Flexes, extends and abducts arm |
| Pectoralis Major | Clavicle, sternum, costal cartilage, true ribs | Anterior aspect of proximal end of humerus | Flexes, adducts and medially rotates humerus |
| Latissimus Dorsi | Spinous processes of T6-L5, iliac crest, last 3 ribs | Intertubercular groove of humerus | Extends, adducts and medially rotates humerus |
| Triceps Brachii | Scapula near glenoid fossa and proximal humerus | Olecranon process of ulna | Extends elbow |
| Brachialis | Anterior surface of humerus | Coronoid process and tuberosity of ulna | Flexes elbow |
| Biceps Brachii | Scapula near glenoid fossa and coracoid proces | Radial tuberosity | Flexes elbow; supinates forearm |
| Brachioradialis | Distal end of humerus | Styloid process of radius | Flexes elbow |
| Supinator | Lateral epicondyle of humerus | Proximal radius | Supinates forearm |
| Pronator Teres | Medial epicondyle of humerus and coronoid process of ulna | Lateral surface of middle of radius | Pronates forearm |
| Flexor Group | Humerus | Metacarpals | Flexes hand at wrist |
| Extensor Group | Humerus | Metacarpals | Extends hand at wrist |
| Palmaris Longus | Medial epicondyle of humerus | * Radial Tuberosity * Palmar aponeurosis | * Flexes elbow * Flexes wrist |
| External Intercostals | Inferior border of rib above | Superior border of rib below | Elevates ribs |
| Internal Intercostals | Superior border of rib below | Inferior border of rib above | Depresses ribs |
| Diaphragm | Xiphoid process, last 6 ribs, lumbar vertebrae | Central tendon | Increses vertical dimension of thorax |
| Rectus Abdominus | Pubic crest | Xiphoid process, cartilage of ribs 5-7 | Flexes spine; compresses abdomen |
| External Abdominal Oblique | Lower 8 ribs | Linea Alba and iliac crest | Flexes and rotates spine; compresses abdomen |
| Internal Abdominal Oblique | Iliac crest and lumbodorsal fascia | Linea Alba and lower 4 ribs | Flexes and rotates spine; compresses abdomen |
| Transverse Abdmominus | Last 6 ribs, iliac crest lumbar fascia | Linea Alba and pubic crest | Compresses abdomen |
| Gluteus maximus | Iliac crest, sacrum, coccyx | Iliotibial tract of fascia latae and gluteal tuberosity | Extends, abducts and rotates femur laterally |
| Gluteus Medius | Ilium | Greater trochanter of femur | Abducts and rotates femur medially |
| Gluteus Minimus | Ilium | Greater trochanter of femur | Abducts and rotates femur medially |
| Tensor Fascia Latae | Iliac crest | Iliotibial tract of fascia latae | Flexes and abducts femur |
| Adductor Longus | Anterior pubic bone | Femur | Flexes and adducts femur |
| Iliopsoas - Psoas Major | Transverse processes and body of lumbar vertebrae | Lesser trochanter of femur | Flexes hip joint; flexes vertebral column |
| Iliopsoas - Iliacus | Iliac crest and iliac fossa | Tendon of Psoas Major | Flexes hip joint |
| Pectineus | Pubic bone | Medial aspect of femur | Flexes, adducts, and rotates thigh medially |
| Biceps Femoris (Hamstring) | Ischial tuberosity and femur | Head of fibula and lateral condyle of tibia | Flexes knee; extends thigh |
| Semitendinosus (Hamstring) | Ischial tuberosity | Medial condyle and shaft of tibia | Flexes knee; extends thigh |
| Semimembranosus (Hamstring) | Ischial tuberosity | Medial condyle of tibia | Flexes knee; extends thigh |
| Gracilis | Pubic bone | Medial surface of tibia | Adducts thigh; flexes knee |
| Sartorius | Anterior, superior iliac spine | Medial surface of tibia | Flexes knee; flexes and rotates thigh laterally |
| Rectus Femoris (Quadricep) | Anterior, inferior iliac spine | Upper border of patella | Flexes thigh; extends knee |
| Vastus Lateralis (Quadricep) | Greater trochanter of femur | Patella and tibial tuberosity | Extends knee |
| Vastus Intermedius (Quadricep) | Anterior and lateral surface of femur | Patella and tibial tuberosity | Extends knee |
| Vastus Medialis (Quadricep) | Medial side of proximal aspect of femur | Patella and tibial tuberosity | Extends knee |
| Gastrocnemius | Medial and lateral condyles of femur | Calcaneus by Achilles Tendon | Extends foot at ankle; flexes knee |
| Soleus | Head of fibula and medial border of tibia | Calcaneus by Achilles Tendon | Extends foot at ankle |
| Peroneus Longus | Head, body and lateral condyle of fibula | 1st metatarsal and 1st cuneiform | Everts foot; assists in extension of foot at ankle |
| Peroneus Brevis | Body of fibula | 5th metatarsal | Everts foot; assists in extension of foot at ankle |
| Tibialis Anterior | Lateral condyle and body of tibia | 1st metatarsal and 1st cuneiform | Flexes foot at ankle; inverts foot |
| Tibialis Posterior | Membrane between tibia and fibula | 2nd, 3rd, 4th metatarsals, navicular, cuboid, 3rd cuneiform | Extends foot at ankle; inverts foot |
| Masseter | Maxilla and zygomatic arch | Angle and ramus of mandible | Elevates mandible |
| Buccinator | Maxilla and mandible | Orbicularis oris | Compress cheek |
| Temporalis | Temporal fossa | Coronoid process and ramus of mandible | Elevates and retracts mandible |
| Orbicularis Oris | Fascia surrounding lips | Mucosa of lips | Close lips |
Created by:
Bio201
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