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;
8 Cards in this Set
- Front
- Back
Superficial Intrinsic Back Muscles: Splenius Capitis (splenii) |
Thin, strap-like Fiber Direction: superolateralO's: inferior nuchal ligg | SPs C7-T4 I's: mastoid process | lateral 3rd of superior nuchal line Actions: extension of C/S and AO joint Secondary Actions: side flexion of C/S and AO joint | ipsilateral rotation of C/S and AO joint |
|
Superficial Intrinsic Back Muscles: Splenius Cervicis (splenii) |
Thin, strap-like Fiber Direction: superolateral O's: SPs T3-T6 I's: posterior tubercles of TVPs C1-C4 Actions: extension of C/S Secondary Actions: side bend of C/S | ipsilateral rotation of C/S and AA joint |
|
Intermediate Intrinsic Back Muscles: Iliocostalis (Erector Spinae) |
Has a lumborum, thoracis, cervicis region Fiber Direction: vertical O's: posterior iliac crest | posterior sacrum | sacroiliac ligg | sacral&lumbar SPs | supraspinous ligg I's: superior to angles of ribs | TVPs C4-C6 Actions: extend spine and neck Secondary Actions: side flexion of spine |
|
Intermediate Intrinsic Back Muscles: Longissimus (Erector Spinae) |
Has a thoracis, cervicis, capitus region Fiber Direction: vertical O's: posterior iliac crest | posterior sacrum | sacroiliac ligg | sacral&lumbar SPs | supraspinous ligg I's: superior to ribs | TVPs C1-T12 | mastoid process Actions: extend spine and neck Secondary: side flexion of spine | extend head |
|
Indermediate Intrinsic Back Muscles: Spinalis (Erector Spinae) |
Has a thoracis, cervicis, capitus region Fiber Direction: vertical O's: posterior iliac crest | posterior sacrum | sacroiliac ligg | sacral&lumbar SPs | supraspinous ligg I's: T/S TVPs | occiput b/w superior and inferior nuchal lines Actions: extend spine and neck Secondary: side flexion of spine | extend head |
|
Deep Intrinsic Back Muscles: Semispinalis (Transversospinals) |
Short, deepest muscles (Has a thoracis, cervicis, capitus region) Fiber Direction: superomedial O's: TVPs C4-T12 I's: occipital bone | SPs C1-T12 Actions: extend head Secondary: contralateral rotation of head |
|
Deep Intrinsic Back Muscles: Multifidus (Transversospinals) |
Short muscles in lamina grooves Fiber Direction: superomedial O's: sacrum&ilium | PSIS |sacroiliac ligg | TVPs C4-L5 I's: SPs 2-4 segments superior Actions: extension of spine Secondary: side flexion of spine | contralateral rotation |
|
Deep Intrinsic Back Muscles: Rotatores (Transversospinals) |
Fiber Direction: superomedial O's: TVPs of spine I's: SPs of superior vertebrae Actions: stabilization | local extension Secondary: contralateral rotation | proprioception (spacial awareness) |
