Axial Flashcards
Temporalis: Origin
Temporal fossa
Temporalis: Insertion
Coronoid process
Temporalis: Action
- Elevation of the mandible
- Retraction of the mandible
Sternocleidomastoid (SCM): Origin
- Top of manubrium
- Medial 1/3 of the clavicle
Sternocleidomastoid (SCM): Insertion
- Mastoid process
- Lateral portion of superior nuchal line
Sternocleidomastoid (SCM): Action
- Lateral flexion of head & neck to the same side
- Rotation of head & neck to the opposite side
- BL: flexion of the neck
Trapezius: Origin
- External occipital protuberance
- Medial portion of superior nuchal line
- Ligamentum nuchae
- SPs C7-T12
Trapezius: Insertion
- Lateral 1/3 of clavicle
- Acromion
- Spine of scapula
Trapezius: Action
Upper:
- Elevate scapula
Middle:
- Retract scapula
Lower:
- Depress scapula
Posterior Scalene: Origin
TVPs C6-7
Posterior Scalene: Insertion
Second rib
Posterior Scalene: Action
- Elevates ribs during forced inhalation
- Rotate neck to the same side
- Laterally flex neck to the same side
Erector Spinae Group (ESG): Origin
Thoracolumbar aponeurosis
Erector Spinae Group (ESG): Insertion
- SPs and TVPs of throracic & cervical vertebrae
- Various posterior ribs
- Mastoid process
Erector Spinae Group (ESG): Action
- Lateral flexion to the same side
- BL: extend vertebral column
Rectus Abdominis: Origin
- Pubic crest
- Pubic symphysis
Rectus Abdominis: Insertion
- Cartilage of ribs 5, 6, 7
- Xiphoid process
Rectus Abdominis: Action
- Flex trunk
- Tilt pelvis posteriorly
Masseter: Origin
Zygomatic arch
Masseter: Insertion
Angle and ramus of the mandible
Masseter: Action
- Elevation of the mandible
- Protraction of the mandible
Suboccipitals: Origin
- SP C2
- TVP C1
Suboccipitals: Insertion
Inferior nuchal line
Suboccipitals: Action
- Rock & tilt head into extension
- Rotation to the same side
- Lateral flexion to the same side
Anterior Scalene: Action
- Elevates ribs during forced inhalation
- Rotate neck to the opposite side
- Laterally flex neck to the same side
Anterior Scalene: Origin
TVPs C3-6
Anterior Scalene: Insertion
First rib
Middle Scalene: Action
- Elevates ribs during forced inhalation
- Rotate neck to the opposite side
- Laterally flex neck to the same side
Middle Scalene: Origin
TVPs C2-7
Middle Scalene: Insertion
First rib
Quadratus Lumborum (QL): Origin
Posterior iliac crest
Quadratus Lumborum (QL): Insertion
- Last/12th rib
- TVPs L1-4
Quadratus Lumborum (QL): Action
- Laterally tilt (elevate) pelvis
- Lateral flexion of the trunk to the same side
Splenius Capitis: Origin
- Inferior 1/2 of ligamentum nuchae
- SPs C7-T4
Splenius Capitis: Insertion
- Mastoid process
- Lateral portion of superior nuchal line
Splenius Capitis: Action
- Lateral flexion of head & neck to the same side
- Rotation of head & neck to the same side
- BL: extension of head & neck
Levator Scapula: Origin
TVPs C1-4
Levator Scapula: Insertion
Medial border of scapula between the superior angle and spine
Levator Scapula: Action
- Elevate scapula
- Laterally flex head & neck to the same side
External Oblique: Origin
External surfaces of ribs 5-12
External Oblique: Insertion
- Anterior iliac crest
- Abdominal aponeurosis (rectus sheath) to linea alba
External Oblique: Action
- Lateral flexion of the trunk to the same side
- Rotation of the trunk to the opposite side