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KA II - Exam I

Muscle Actions and Attachments

QuestionAnswer
Rectus Capitis Lateralis - Actions Atlanto-occipital: Lateral Flexion
Rectus Capitis Lateralis - Attachments O: Transverse process of C1 (atlas) I: Occipital Bone (jugular process)
Rectus Capitis Posterior Minor - Actions Atlanto-occipital: Extension
Rectus Capitis Posterior Minor - Attachments O: Tubercle of posterior arch of (C1) atlas I: Most medial fossa below inferior nuchal line (next to foramen magnum)
Rectus Capitis Posterior Major - Actions Atlanto-occipital: Extension Atlanto-occipital: Same Side Rotation
Rectus Capitis Posterior Major - Attachments O: Spinous Process of C2 (axis) I: Middle fossa below lateral inferior nuchal line (lateral to Rectus Capitus Posterior Minor.
Obliquus Capitis Inferior - Actions Atlanto-axial: Same Side Rotation
Obliquus Capitis Inferior - Attachments O: Spine & Lamina of C2 (axis) I: Transverse Process of C1 (atlas)
Obliquus Capitis Superior - Actions Atlanto-occipital: Extension, lateral flexion, (opposite side rotation?)
Obliquus Capitis Superior - Attachments O: Transverse process of C1 (atlas) I: Most lateral fossa, extending between superior and inferior nuchal lines and overlapping insertion of Rectus Capitis Posterior Major
Rectus Capitis Anterior - Actions Atlanto-occipital: Flexion
Rectus Capitis Anterior - Attachments O: Anterior Surface of the lateral mass of C1 (atalas) I: Basal part of the occipital bone
Anterior Scalene - Actions Cervical vertebrae: Flexion, lateral flexion Costovertebral: Elevation of rib #1 (inspiration)
Anterior Scalene - Attachments O: Anterior tubercles on transverse process of C3-C6 I: Rib #1
Middle Scalene - Actions Cervical Vertebrae: Lateral Flexion Costovertebral: Elevation of rib #1 (inspiration)
Middle Scalene - Attachments O: Posterior tubercles on transverse process of C2-C7 I: Rib #1
Posterior Scalene - Actions Cervical Vertebrae: Lateral flexion Costovertebral: Elevation of rib #2 (inspiration)
Posterior Scalene - Attachments O: Posterior tubercles on transverse process of C4-C6 I: Rib #2
Sternocleidomastoid - Actions Head and Cervical vertebrae: Flexion, Lateral Flexion, Opposite Side Rotation
Sternocleidomastoid - Attachments O: Manubrium of sternum next to the sternal notch, medial 1/3 of clavicle I: Mastoid process and lateral part of superior nuchal line.
Quadratus Lumborum - Actions 12th rib: Stabilization Lumbar spine: Lateral flexion, extension
Quadratus Lumborum - Attachments O (caudal): Iliolumbar ligament & adjacent iliac crest I (cranial): 12th ribs, tip of transverse process of L1-L4.
Iliacus - Actions Hip: Flexion and lateral rotation
Iliacus - Attachments O: Iliac fossa I: Lesser trochanter (common tendon with psoas major)
Psoas major - Actions Hip: Flexion, Lateral Rotation Lumbar Spine: Extension, lateral flexion, stabilization
Psoas Major - Attachments O: Lateral part of bodies and discs, anterior transverse processes from T12-L5: Lesser trochanter or femur (common tendon with iliacus)
Rectus Abdominis - Actions Lumbar Spine: Flexion Ribs: Depression
Rectus Abdominis - Attachments O: Costal Cartilage 5, 6, 7, xiphoid process I: Pubic crest and tubercles
External Oblique - Actions Vertebral Column: Flexion, lateral flexion, opposite side rotation.
External Oblique - Attachments O: Lower margin of ribs 5-12 I: Anterior part of the iliac crest, inguinal ligament, rectus sheath and linea alba
Multifidus - Actions Vertebrae: Extension, Lateral Flexion, Opposite Side Rotation
Multifidus - Attachments O: (caudal) All transverse processes from sacrum to C4 (articular process in the lumber region) I: (cranial) Spinous process of two to five vertebrae above Hint: 4 strands from each transverse process fan out to spinous process 2 to 5 vertebrae above.
Created by: chuddles33
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