Locations
What mm is deep to the spinalis m?
Semispinalis
What is the common action of the transversospinalis mm. group?
Contralateral rotation
What muscles comprise the erector spinae muscles?
Iliocostalis
Longissimus
Spinalis
Which muscle spans 2-4 vertebrae before inserting?
multifidus
A patient presents with difficulty extending the cervical portion of their back, lateral flexion of the head and ipsilateral rotation of the head. What muscle group is affected?
Splenius
What ILS mm is the most medial?
Spinalis
If the semispinalis contracts unilaterally what is the effect?
Flexion of the head, and spine ipsilaterally
Rotation to the contralateral side
What muscles make up the transversospinalis muscles?
Rotatores
Multifidus
Semispinalis
Which muscle spans 4 to 6 vertebra between attachments?
Semispinalis m
A patient presents with low back pain, they state there is only ligaments involvement and was caused by extensive rotation and extension of the back. Is this a strain or a sprain?
Sprain
What muscle is superficial to the rotatores but deep to the semispinalis?
multifidus
If the Interspinales were to contract unilaterally what is the effect?
Ipsilateral flexion of spine
What are the 3 deepest mm of the back?
Interspinales
Intertransversarrii
Levatores costarum
What muscle of the erector spinae has a cervical, capitis and thoracic segment?
Longissimus
A patient shows difficulty maintaining upright posture and leaning/reaching to their R side to pick up a cone. What muscle group is most likely injured?
Erector Spinae
What muscle will be present in the thoracic region of the vertebral column but nowhere else?
Rotatores m.
What is the unilateral action of the Multifidus?
Ipsilateral flexion
contralateral rotation
What is the common innervation of all of the intrinsic back mm?
Posterior rami
What group of muscles can be differentiated based on teh number of vertebrae the muscles span between attachments?
Transversospinalis
A patient is working on diaphragmatic breathing but is having trouble fully inhaling. What serratus posterior muscle could we assume is affected?
Serratus Posterior Superior
What muscle is the only intrinsic intermediate m. present in the Lumbar region?
Iliocostalis lumborum
What is the unilateral effect of the splenius capitis?
Lateral flexion of the head
Ipsilateral rotation of the head
What is the innervation of the serratus posterior mm.?
Anterior rami of the adjacent intercostal nn.
What muscles are between adjacent transverse processes?
intertransversarii mm.
Your patient had a spinal cord injury that affected the posterior rami of T6, which muscles could be affected?
Iliocostalis
Longissimus
Spinalis
Semispinalis
Rotatores
Multifidus
Levatores Costarum