Day 2 Flashcards
What osseous parts of the vertebral column serve as an origin to the iliocostalis thoracis?
None
What osseous parts of the vertebral column serve as an origin to the iliocostalis lumborum pars lumborum?
Spinous processes of L1-L5
What is the insertion of the iliocostalis thoracis?
Costal angles of the upper 6-7 ribs, transverse process of C7
What osseous parts of the vertebral column serve as an origin to the iliocostalis cervicis?
None
What osseous parts of the vertebral column serve as an origin to the longissimus thoracis?
Accessory process & transverse process of L1-L5, spinous processes of L3-L5 and median sacral crest S1-S3
Which erector spinae muscles attach to cervical articular processes?
Longissimus cervicis & longissimus capitis
Which muscles are identified as trsnsversospinalis muscles?
Semispinalis, multifidis mad rotators
How many vertebrae can be attached to a single segment by trsnsversospinalis muscles?
As many as nine vertebrae
Which segment will represent the lowest attachment site for the semispinalis thoracis?
T12
What osseous parts of the vertebral column serve as an origin to the semispinalis cervicis?
Transverse tubercles of T1-T5 or T6 & articular process of C4-C7
What osseous parts of the vertebral column serve as an origin to the semispinalis capitis?
Transverse tubercles of C7,T1-T6 or T7 & articular processes of C4-C6
What osseous parts of the vertebral column serves as an origin to the semispinalis cervicis?
Transverse tubercles of T1-T5 or T6 & articular processes of C4-C7
The biventer cervicis is formed by the fusion of what Muscles?
Semispinalis capitis, and spinalis capitis
Which transversospinalis muscles attaches to articular and mammillary processes along the spine?
Multifidis
Contraction of the classic multifidis will result in what movements of the vertebral column?
Lateral flexion & rotation of the spine, maintains the lumbar lordotic curve and prevents entrapment of zygapophyseal capsular ligament during movement
Which muscles of the spine exhibit a reversal of the expected origin - insertion combination?
Iliocostalis lumborum pars lumborum, longissimus thoracic pars lumborum and multifidis lumborum
Rotator muscles are typically identified in what region of the spine?
The thoracic region
Which suboccipital muscle lacks an attachment to the skull?
Obliquus capitis inferior
Which nerve will innervated all suboccipital muscles?
The dorsal ramus of C1, the suboccipital nerve
What is the proposed function of the suboccipital muscle group?
Postural stabilizers of the atlanto-occipital and atlanto-axial joints
Which suboccipital muscles are known to attach to the dura mater?
Rectus capitis posterior major, rectus capitis posterior minor & obliquus capitis inferior
At what locations will interspinalis be absent along the spine?
T3-T4 down to T10-T11
Based on the density of muscle spindles what is the proposed function of the interspinalis?
Acts as a proprioceptive transducer in conjunction with intertransversarii to coordinate the smooth movement of the spine and to maintain appropriate posture
Which muscle group is innervated by both dorsal rami and ventral rami of spinal nerves?
Intertransversarii
Based on the density of muscles spindles what is the proposed function of the intransversarii?
Acts as a proprioceptive transducer in conjunction with interspinalis to coordinate the smooth movement of the spine and to maintain appropriate posture
