Spine, Thorax, Head, Neck, and Face Flashcards
Erector Spinae Origin
Common tendon (thoracolumbar aponeurosis) that attaches to the posterior surface of sacrum, iliac crest, spinous processes of the lumbar and last two thoracic vertebrae
Erector Spinae Insertion
Various attachments at the posterior ribs, SP and TPs of thoracic and cervical vertebrae and mastoid process of temporal bone
Erector Spinae Actions
Unilateral: lateral flexion of vertebral column to the same side
Bilateral: Extension of vertebral column
Splenius Capitis Origin
Inferior 1/2 of ligmanetum nuchae and SP of C7-T4
Splenius Capitis Insertion
Mastoid Process and lateral portion of superior nuchal line
Splenius Capitis Action
Unilaterally: Rotate the head and neck to same side; Laterally flex head and neck
Bilaterally Extend head and neck
Splenius Cervicis Origin
SP of T3-T6
Splenius Cervicis Insertion
TP of C1 to C3
Splenius Cervicis Action
Unilaterally: Rotate the head and neck to same side; Laterally flex head and neck
Bilaterally Extend head and neck
Suboccipitals: Rectus Capitis Posterior Major, Rectus Capitis Posterior Minor, Oblique Capitis Superior, Oblique Capitis Inferior
Origins
RCP Major: SP of axis (C2)
RCP Minor: tubercle of the posterior arch of atlas (C1)
OCS: TP of atlas (C1)
OCI: SP of axis
Suboccipitals: Rectus Capitis Posterior Major, Rectus Capitis Posterior Minor, Oblique Capitis Superior, Oblique Capitis Inferior
Insertions
RCP Major: Inferior Nuchal line
RCP minor: Inferior nuchal line of occiput
OCS: between the nuchal lines of occiput
OCI: TP of atlas (C1)
Suboccipitals: Rectus Capitis Posterior Major, Rectus Capitis Posterior Minor, Oblique Capitis Superior, Oblique Capitis Inferior
Actions
RCP Major, RCP, Minor, OCS: Rock and Tilt head back into extension
RCP Major, OCI: rotate the head to same side
OCS: Laterally flex head to same side
Quadratus Lumborum Origin
Posterior Iliac Crest
Quadratus Lumborum Insertion
Last rib and TP of 1st-4th lumbar vertebrae
Quadratus Lumborum Action
Unilateral: laterally tilt (elevate) the pelvis
Laterally flex the vertebral column to the same side
Assist in extension of vertebral column
Bilaterally: Fix the last rib during forced inhalation and exhalation
Rectus Abdominis Origin
Pubic crest, pubic symphysis
Rectus Abdominis Insertion
Cartilage of 5th, 6th, and 7th ribs and xiphoid process
Rectus Abdominis Actions
Flex the vertebral column, Tilt pelvis posteriorly
External Oblique Origin
External surfaces of 5th to 12th ribs
External Oblique Insertion
Anterior part of the iliac crest, abdominal aponeurosis to linea alba
External Oblique Action
Unilaterally: Laterally flex vertebral column, rotate vertebral column to the opposite side
Bilaterally: Flex the vertebral column, Compress abdominal contents
Internal Oblique Origin
Lateral inguinal ligament, Iliac crest and thoracolumbar fascia
Internal Oblique Insertion
Internal surface of lower three ribs, abdominal aponeurosis to linea alba
Internal Oblique Actions
Unilaterally: Lateral flexion of vertebral column to the same side, Rotate vertebral column to the same side
Bilaterally: Flex the vertebral column
Compress abdominal contents
Transverse Abdominis Origin
Lateral inguinal ligament, iliac crest, thoracolumbar fascia and internal surface of lower six ribs
Transverse Abdominis Insertion
Abdominal aponeurosis to linea alba
Transverse Abdominis Action
Compress abdominal contents
Diaphragm Origin
Costal attachment: Inner surface of lower six ribs
Lumbar attachment: Upper two or three lumbar vertebrae
Sternal attachment: Inner part of xiphoid process
Diaphragm Insertion
Central tendon
Diaphragm Action
Draw down the central tendon of the diaphragm
Increase volume of the thoracic cavity during inhalation
Intercostals Origin
Inferior border of the rib above
Intercostals Insertion
Superior border of the rib below
Intercostals Action
External intercostals: Draw ribs superiorly to help with inhalation
Internal intercostals: Draw the ribs inferiorly to assist with exhalation
Serratus Posterior Superior Origin
SP of C7-T3
Serratus Posterior Superior Insertion
Posterior surface of Ribs 2-5
Serratus Posterior Superior Action
Elevate ribs during inhalation
Serratus Posterior Inferior Origin
SP of T12-L3
Serratus Posterior Inferior Insertion
Posterior surface of Ribs 9-12
Serratus Posterior Inferior Action
Depresses ribs during exhalation
Sternocleidomastoid Origin
Sternal head: Top of manubrium
Clavicular head: Medial 1/3 of clavicle
Sternocleidomastoid Insertion
Mastoid process of temporal bone and the lateral portion of superior nuchal line of occiput
Sternocleidomastoid Action
Unilateral: Lateral flexion of head and neck to same side
Rotate head and neck to opposite side
Bilateral: Flexion of neck
Assist to elevate the ribcage during inhalation
Scalenes Origin
Anterior: TP of C3-C6 (anterior tubercles)
Middle: TP of C2-C7 (posterior tubercles)
Posterior: TP of C6, C7 (posterior tubercles)
Scalene Insertion
Anterior, Middle: 1st rib
Posterior: 2nd rib
Scalene Action
Unilaterally: Laterally flex the head and neck to the same side
Rotate head and neck to opposite side
Bilaterally: Elevate the ribs during inhalation
Flex the head and neck (anterior)
Masseter Origin
Zygomatic arch
Masseter Insertion
Angle and ramus of mandible
Masseter Action
Elevate mandible; Protract mandible
Temporalis Origin
Temporal fossa and fascia
Temporalis Insertion
Coronoid process and anterior edge of ramus of the mandible
Temporalis Action
Elevate mandible and retract mandible (temperomandibular joint)
Occipitofrontalis Origin
Galea aponeurotica
Occipitofrontalis Insertion
Frontalis: skin superior to eyebrows
Occipitalis: Superior nuchal line of the occiput
Occipitofrontalis Action
Frontalis: Raise the eyebrows and wrinkle the forehead
Occipitalis: Anchor and retract the galea posteriorly