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Posterior Torso
Muscles of the Posterior Torso
Question | Answer |
---|---|
What is the Origin of the Erector Spinae (group) | Thoracolumbar aponeurosis which attaches to posterior surface of sacrum, iliac crest, spinous processes of lumbar and last 2 thoracic vertebrae. |
What is the Origin of the Multifidus | Sacrum & transverse processes of lumbar through to cervical vertebrae |
What is the Origin of the Rotators | Transverse processes of lumbar through cervical vertebrae |
What is the Origin of the Levator Scapulae | Transverse processes of C1 – C4 |
What is the Origin of the Trapezius | External Occipital protuberance, medial portion of superior nuchal line of occiput, ligamnetum nuchae & spinous processes of C7-T12 |
What is the Origin of the Rhomboids | Minor=Spinous processes of C7-T1 Major= Spinous processes of T2-T5 |
What is the Origin of the Latissimus Dorsi | Spinous processes of T7-T12, last 3or 4 ribs, thoracolumbar aponeurosis & posterior iliac crest |
What is the Origin of the Quadratus Lumborum | Posterior Iliac crest |
What is the insertion of the Erector Spinae (group) | Various attachments at posterior ribs, spinous and transverse processes of T and C vertebrae and mastoid process. |
What is the insertion of the Multifidus | Spinous processes of lumbar vertebrae through to C2. Span two to four vertebrae. |
What is the insertion of the Rotators | Spinous processes of lumbar vertebrae through to C2. Span one to two vertebrae. |
What is the insertion of the Levator Scapulae | Upper region of medial border and superior angle of scapula |
What is the insertion of the Trapezius | Lateral third of clavicle, acromion & spine of scapula |
What is the insertion of the Rhomboids | Minor= upper portion of medial border of scapula, across from spine of scapula Major= Medial border of scapula between spine of scapula & inferior angle |
What is the insertion of the Latissimus Dorsi | Crest of lesser tubercle of humerus |
What is the insertion of the Quadratus Lumborum | Last rib and transverse processes of L1-L4 |
What are the Actions of the Erector Spinae (group) | UNILATERAL= laterally flex vertebral column BILATERAL=Extend vertebral column |
What are the Actions of the Multifidus | UNILATERAL=Rotate spinal column to opposite side BILATERAL=Extend spinal column (Mul) |
What are the Actions of the Rotators | UNILATERAL=Rotate spinal column to opposite side BILATERAL=Extend spinal column (Rot) |
What are the Actions of the Levator Scapulae | UNILATERAL=Elevate & downwardly rotate scapula Laterally flex head & neck Rotate head & neck to same side BILATERAL= Extend head & neck |
What are the Actions of the Trapezius | UPPER=bilal' ext head & neck. Unilat' = lat. flex head & neck to same side/rotate head & neck to opposite side/elevate scap/upwardly rotate scapula MIDDLE = add' & stabilize scap LOWER = Depress and upwardly rotate scap |
What are the Actions of the Rhomboids | Adduct, Elevate and downwardly rotate scapula |
What are the Actions of the Latissimus Dorsi | Extend adduct & medially rotate shoulder joint |
What are the Actions of the Quadratus Lumborum | UNILATERAL=Laterally tilt pelvis/Laterally flex spine to same side/Assist to extend spine BILATERAL=Fix last rib during inhalation & forced exhalation |
Which muscle Originates from the Thoracolumbar aponeurosis which attaches to posterior surface of sacrum, iliac crest, spinous processes of lumbar and last 2 thoracic vertebrae. | Erector Spinae (group) |
Which muscle Originates from the Sacrum & transverse processes of lumbar through to cervical vertebrae | Multifidus |
Which muscle Originates from the Transverse processes of lumbar through cervical vertebrae | Rotators |
Which muscle Originates from the Transverse processes of C1 – C4 | Levator Scapulae |
Which muscle Originates from the External Occipital protuberance, medial portion of superior nuchal line of occiput, ligamnetum nuchae & spinous processes of C7-T12 | Trapezius |
Which muscle Originates from the Minor=Spinous processes of C7-T1 Major= Spinous processes of T2-T5 | Rhomboids |
Which muscle Originates from the Spinous processes of T7-T12, last 3or 4 ribs, thoracolumbar aponeurosis & posterior iliac crest | Latissimus Dorsi |
Which muscle Originates from the Posterior Iliac crest | Quadratus Lumborum |
Which muscle Inserts into the Various attachments at posterior ribs, spinous and transverse processes of T and C vertebrae and mastoid process. | Erector Spinae (group) |
Which muscle Inserts into the Spinous processes of lumbar vertebrae through to C2. Span two to four vertebrae. | Multifidus |
Which muscle Inserts into the Spinous processes of lumbar vertebrae through to C2. Span one to two vertebrae. | Rotators |
Which muscle Inserts into the Upper region of medial border and superior angle of scapula | Levator Scapulae |
Which muscle Inserts into the Lateral third of clavicle, acromion & spine of scapula | Trapezius |
Which muscle Inserts into the Minor= upper portion of medial border of scapula, across from spine of scapula Major= Medial border of scapula between spine of scapula & inferior angle | Rhomboids |
Which muscle Inserts into the Crest of lesser tubercle of humerus | Latissimus Dorsi |
Which muscle Inserts into the Last rib and transverse processes of L1-L4 | Quadratus Lumborum |
Which muscle's Actions are to: UNILATERAL= laterally flex vertebral column BILATERAL=Extend vertebral column | Erector Spinae (group) |
Which muscle's Actions are to: UNILATERAL=Rotate spinal column to opposite side BILATERAL=Extend spinal column (Mul) | Multifidus |
Which muscle's Actions are to: UNILATERAL=Rotate spinal column to opposite side BILATERAL=Extend spinal column (Rot) | Rotators |
Which muscle's Actions are to: UNILATERAL=Elevate & downwardly rotate scapula Laterally flex head & neck Rotate head & neck to same side BILATERAL= Extend head & neck | Levator Scapulae |
Which muscle's Actions are to: UPPER=bilal' ext head & neck. Unilat' = lat. flex head & neck to same side/rotate head & neck to opposite side/elevate scap/upwardly rotate scapula MIDDLE = add' & stabilize scap LOWER = Depress and upwardly rotate scap | Trapezius |
Which muscle's Actions are to: Adduct, Elevate and downwardly rotate scapula | Rhomboids |
Which muscle's Actions are to: Extend adduct & medially rotate shoulder joint | Latissimus Dorsi |
Which muscle's Actions are to: UNILATERAL=Laterally tilt pelvis/Laterally flex spine to same side/Assist to extend spine BILATERAL=Fix last rib during inhalation & forced exhalation | Quadratus Lumborum |