06/03/2025
➡️ EXTERNAL OBLIQUE
✅ ORIGIN: Outer surface of the 5th to the 12th ribs
✅ INSERTION: Linea alba; The p***c crest and tubercle; The anterior superior iliac spine and iliac crest
💪🏼 ACTION: Rotates vertebral column to the opposite side and bends trunk to the same side (unilateral); Aids expiration by compressing and depressing the lower thoracic cavity, weakly assists in flexion of the trunk and helps maintain abdominal tone (bilateral)
☑️ NERVE SUPPLY: Lower intercostal nerves; Subcostal nerve
01/02/2025
➡️ CORACOBRACHIALIS
✅ ORIGIN: Coracoid process of scapula
✅ INSERTION: Middle 3rd of medial aspect of humerus
💪🏼 ACTION: Adducts and flexes arm at glenohumeral joint
☑️ NERVE SUPPLY: Musculocutaneous nerve (C5-C7)
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08/27/2024
➡️ MULTIFIDUS
✅ ORIGIN: Posterior superior iliac spine; Dorsal surface of sacrum; Mammillary processes of lumbar vertebrae; Transverse processes of thoracic vertebrae; Articular processed of C4-C7
✅ INSERTION: Spinous process of lumbar, thoracic and cervical vertebrae
💪🏼 ACTION: Extends and laterally flexes neck and trunk; Stabilizes vertebral column
☑️ NERVE SUPPLY: Medial branches of posterior rami of cervical, thoracic and lumbar nerves
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07/25/2024
➡️ STERNOTHYROID
✅ ORIGIN: Posterior surface of the manubrium below the origin of the sternohyoid
✅ INSERTION: Oblique line of the thyroid cartilage
💪🏼 ACTION: Depression and stabilization of the larynx (thyroid cartilage) for phonation and swallowing
☑️ NERVE SUPPLY: Superior root of ansa cervicalis; Inferior root of ansa cervicalis
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07/21/2024
➡️ QUADRATUS LUMBORUM
✅ ORIGIN: Posterior part of the iliac crest and the iliolumbar ligament
✅ INSERTION: 12th rib and the transverse processes of the vertebrae L1-L4
💪🏼 ACTION: Bends the trunk ipsilaterally; Fixes the 12th rib; Aids in expiration
☑️ NERVE SUPPLY: Subcostal nerve; Lumbar spinal nerves
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07/17/2024
➡️ EXTENSOR HALLUCIS BREVIS
✅ ORIGIN: Superolateral surface of the calcaneus
✅ INSERTION: Dorsum of the base of the proximal phalanx and dorsal aponeurosis of the hallux
💪🏼 ACTION: Extensor of the metatarsophalangeal joint of the hallux
☑️ NERVE SUPPLY: Muscular branch of deep fibular nerve (L5, S1)
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07/11/2024
➡️ PSOAS MAJOR
✅ ORIGIN: Anterior surfaces and lower borders of the transverse processes of T12-L5
✅ INSERTION: Lesser trochanter of the femur inserts as the iliopsoas tendon
💪🏼 ACTION: Flexion of the hip joint; External rotation; Bends the lumbar vertebral column
☑️ NERVE SUPPLY: L1, L2, L3 spinal nerves
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04/08/2024
➡️ TIBIALIS ANTERIOR
✅ ORIGIN: Lateral proximal tibia; The tibial condyle; The interosseous membrane; The superficial crural fascia
✅ INSERTION: Medial surface of the medial cuneiform bone and the 1st metatarsal bone
💪🏼 ACTION: Dorsal flexion of the talocrural joint and inversion of the subtalar joint
☑️ NERVE SUPPLY: Deep fibular nerve (L4, L5)
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01/03/2024
➡️ ILIOCOSTALIS THORACIS
✅ ORIGIN: Angles of 7th to 12th ribs
✅ INSERTION: Angles of 1st to 6th ribs
💪🏼 ACTION: Extends and laterally flexes trunk
☑️ NERVE SUPPLY: Lateral branches of posterior rami of thoracic nerves
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10/08/2023
➡️ TERES MAJOR
✅ ORIGIN: Posterior aspect of inferior angle of scapula
✅ INSERTION: Crest of lesser tubercle of humerus
💪🏼 ACTION: Adducts and medially rotates arm at glenohumeral joint
☑️ NERVE SUPPLY: Lower subscapular nerve (C5-C7)
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09/06/2023
➡️ GRACILIS
✅ ORIGIN: P***c symphysis and the inferior p***c ramus
✅ INSERTION: Medial surface of the tibia
💪🏼 ACTION: Adduction of the hip joint; Flexion and internal rotation of the knee joint
☑️ NERVE SUPPLY: Obturator nerve (L2, L3)
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08/01/2023
➡️ RHOMBOID MINOR
✅ ORIGIN: Nuchal ligament; Spinous processes of C7-T1
✅ INSERTION: Medial border of scapula adjacent to spine of scapula
💪🏼 ACTION: Retracts and downwardly rotates pectoral girdle at acromioclavicular and sternoclavicular joints
☑️ NERVE SUPPLY: Dorsal scapular nerve (C4-C5)
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07/17/2024
07/11/2024
04/08/2024
01/03/2024
10/08/2023
09/06/2023
08/01/2023