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MUSCLE
REGION
ORIGIN
INSERTION
PRIMARY
ACTION
SECONDARY
ACTION
INNERVATION
ventral rami of T1 to T12
(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)
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Expiration
2nd to 6th costal cartilages
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body of sternum, xiphoid process, 4th to 7th costal cartilages
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Torso
Transversus Abdominis
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ventral rami of the T12 subcostal nerve, L1 to L4 spinal nerve
(T12, L1, L2, L3, L4)
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Ipsilateral lumbar rotation
Lumbar stabilizer
iliac crest, iliolumbar ligament, transverse processes of lumbar vertebrae
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medial half of lower border of rib 12
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Torso
Quadratus lumborum
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femoral nerve
(L2, L3)
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Hip flexion
lesser trochanter of femur, capsule of hip joint
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iliac fossa, ala of sacrum
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Lower Limb
Iliacus
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ventral rami of T7 to T12, L1 spinal nerve
(T7, T8, T9, T10, T11, T12, L1)
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Core stabilizer
Lumbar to thoracic flexion
pubic symphysis, pubic crest
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xiphoid process, Costal cartilages of 5th to 7th ribs
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Torso
Rectus Abdominis
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anterior rami of L1 to L4
(L2, L3)
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Hip flexion
lesser trochanter of femur, Capsule of hip joint
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bodies and transverse processes of T12 to L5, T12 to L5 intervening intervertebral discs
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Lower Limb, Torso
Psoas Major
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ventral rami of T7 to T12, L1 spinal nerve
(T7, T8, T9, T10, T11, T12, L1)
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Ipsilateral lumbar to thoracic lateral flexion, ipsilateral lumbar to thoracic rotation, expiration
Lumbar to thoracic flexion
lateral 2/3 of inguinal ligament, middle lip of anterior 2/3 iliac crest, body of pubis, pubic crest, thoracolumbar fascia (TLF) - most fibres
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9th to 12th ribs
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Torso
Internal Oblique
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ventral rami of adjacent spinal nerves
(T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)
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Inspiration
Upper border of the 2nd to 12th ribs
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Lower border of 1st to 11th ribs
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Torso
Intercostals
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ventral rami of T7 to T12, L1 spinal nerve
(T7, T8, T9, T10, T11, T12, L1)
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Ipsilateral lumbar to thoracic lateral flexion, contralateral lumbar to thoracic rotation, expiration
Lumbar to thoracic flexion
outer lip of anterior 2/3 iliac crest, linea alba, pubic tubercle, thoracolumbar fascia (TLF)
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5th to 12th ribs, Costal cartilages of 5th to 10th ribs
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Torso
External Oblique
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Ulnar nerve
(C7, C8)
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Wrist ulna deviation, Elbow flexion
Wrist flexion
Hook of hamate, Base of 5th metacarpals
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Medial epicondyle of the humerus
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Upper Limb
Flexor Carpi Radialis
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Medial pectoral nerve, Lateral pectoral nerve
(C5, C6, C7, C8, T1)
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Shoulder flexion, Shoulder extension
Shoulder adduction, Shoulder internal rotation
Lateral lip of the intertubercular groove of the humerus
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Medial 1/2 anterior clavicle, Anterior manubrium, Body of the sternum, Anterior 1st to 6th ribs, Aponeurosis of the external oblique
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Upper Limb, Torso
Pectoralis Major
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ventral rami of the T12 subcostal nerve, L1 to L4 spinal nerve
(T12, L1, L2, L3, L4)
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Ipsilateral lumbar rotation
Lumbar stabilizer
iliac crest, iliolumbar ligament, transverse processes of lumbar vertebrae
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medial half of lower border of rib 12
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Torso
Quadratus lumborum
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Long thoracic nerve
(C5, C6, C7)
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Scapula lateral rotation
Scapula protraction
Medial border of the scapula
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1st to 9th ribs, 1st to 8th intercostal fascia
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Upper Limb, Torso
Serratus Anterior
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MUSCULOSKELORDLE
Anatomy muscle guessing game
Abductor Digiti Minimi
Lower Limb
Abductor Digiti Minimi
Upper Limb
Abductor Hallucis
Lower Limb
Abductor Pollicis Brevis
Upper Limb
Abductor Pollicis Longus
Upper Limb
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