Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
|
M. erector spinae lateral tract |
Mm. iliocostalis, longissimus, splenius, levatores costarum |
|
|
M. erector spinae medial tract |
Mm. interspinales, spinalis, rotatores breves and longi, multifidus, semispinalis |
|
|
M. iliocostalis is divided into which three parts? |
Mm. iliocostalis lumborum, thoracis and cervicis. |
|
|
M. longissimus is divided into which three parts? |
Mm. longissimus thoracis, cervicis, capitis |
|
|
M. Splenius is divided into two parts, which are named: |
Mm. splenius cervicis and capitis |
|
|
M. semispinalis is divided into three parts, which are named: |
Mm. semispinalis thoracis, cervicis and capitis |
|
|
M. iliocostalis is innervated by which nerves? |
Lateral branches of Rr.dorsales of spinal nerves C8-L1 |
|
|
M. splenius is innervated by: |
Lateral branches of Rr.dorsales of spinal nerves C1-C6 |
|
|
M. longissimus is innervated by: |
Lateral branches of spinal nerves C1-L5 |
|
|
M. multifidus has origin and insertion where? And is innervated by: |
O/I: courses between the transverse and spinous process (skipping 2-4 vertebrae) of all cervical vertebrae (CII-Os sacrum) Rr. dorsales of the spinal nerves |
|
|
M. spinalis is innervated by? |
Rr. dorsales of the spinal nerves |
|
|
M. spinalis. Origin and insertion. |
O: thoracis: lateral surface of procc. spinosi (TX-TXII) cervicis: procc.spinosi TI-TII + CV-CVII I: thoracis: lateral surface of procc. spinosi TII-TVIII. cervicis: procc. spinosi CII-CV |
|
|
M. semispinalis. Origin, insertion and innervation. |
O: Procc. transversii of T6-T12, T1-T6, C3-T6 I: Procc. spinosi of C6-T4, C2-C7, Os occipitale between the Linea nuchalis sup. and Linea nuchalis inf. I: Rr. dorsales of the spinal nerves |
|
|
Innervation of Mm. levatores costarum |
Both Rr. dorsales and Rr.ventrales of the spinal nerves |
|
|
Parts of the M. erector spinae which extends the spine |
Bilateral contraction: Mm. iliocostalis, longissimus, splenius (cervical/head), intertransversarii(cervical, lumbar), levatores costarum (thoracic spine), interspinales (cervical + thoracic), spinalis (cervical + thoracic), multifidus, semispinalis (thoraciv, cervical, head) |
|
|
Origin and insertion of M. iliocostalis |
O: lumborum: Os sacrum, Crista iliaca, Fascia thoracolumbalis thoracic: 7th-12th ribs cervicis: 3rd-7th ribs I: lumborum: 6th-12th ribs + deep layer of Fascia thoracolumbalis + procc.trans. of upper lumbar vertebrae thoracic: 1st-6th ribs cervicis: procc.trans. C4-C6 vertebrae |
|
|
Parts of M. erector spinae contributing to rotation of the back |
Rotation of head: unilateral contraction of: Mm. longissimus and splenius Rotation of thoracic spine: Mm. levatores costarum + rotatores breves and longi (to opposite side during unilateral cont.) Entire spine: Unilateral contraction of Mm. multifidus and semispinalis (to opposite side) |
