Term
|
Definition
Its a relative thinning of the musculature of the back situated along the medial border of the scapula.
It has the following boundaries:
1. Superiorly and medially, by the inferior portion of the Trapezius
2. Inferiorly, by the Latissimus dorsi
3. Laterally by the medial border of the Scapula |
|
|
Term
| extrinsic muscles of the shoulder |
|
Definition
| trapezius and latissimus dorsi |
|
|
Term
| Lumbar triangle of Petit (inferior lumbar triangle) |
|
Definition
formed by borders of the iliac crest-external oblique abdominal muscle and lattisimus dorsi
part of the internal oblique abdominal muscle and its fascia are exposed here |
|
|
Term
| trapezius muscle attachments |
|
Definition
| from external occipital protuberance, and via the nuchal ligament into the superior nuchal line of the skull; the rest of the muscle attaches to spinous process of vertebrae C7-T12 |
|
|
Term
| trapezius muscle insertion |
|
Definition
| lateral clavicle, acromion and spine of scapula |
|
|
Term
| motor innervation of trapezius muscle |
|
Definition
| spinal accessory nerve and the subtrapezial plexus |
|
|
Term
| blood supply for the trapezius muscle |
|
Definition
| superficial branch of the transverse cervical artery |
|
|
Term
| attachments of the latissimus dorsi |
|
Definition
| lower 5 or 6 thoracic vertebrae, the thoracolumbar fascia, the iliac crest and the lower 3 to 4 ribs |
|
|
Term
| main insertion of the latissimus dorsi |
|
Definition
|
|
Term
| Superficial group of extrinsic back muscles |
|
Definition
| trapezius muscle, the latissimus dorsi, rhomboid major and minor, and the Levator scapulae |
|
|
Term
|
Definition
| It provides motor innervation to the rhomboid muscles, which pull the scapula towards the spine and levator scapulae muscle, which elevates the scapula. |
|
|
Term
| true deep intrinsic group of back muscles |
|
Definition
| from superficial to deep: splenius group (neck), the erector spinae (sacrospinalis) and the transversospinalis |
|
|
Term
| Splenius muscle origin and insertion |
|
Definition
| attaches from the nuchal ligament and from spinous processes C7-T6 and wraps laterally and superiorly to insert into the skull and into transverse processes of C1-C4 |
|
|
Term
| name the 3 transversopinalis muscles |
|
Definition
| Semispinalis: Capitis, Cervicis, and thoracis muscles |
|
|
Term
| erector spinae muscles attachments |
|
Definition
| arise from a common tendon on the sacrum and iliac crests and ascend as 3 column of muscle fibers; |
|
|
Term
| insertion of iliocostalis muscle group (of the erector spinae muscles) |
|
Definition
|
|
Term
| insertion of the longissimus group of the erector spinae muscles |
|
Definition
medial group and largest of erector spinae muscles;
attaches to the transverse processes of all the thoracic vertebrae |
|
|
Term
| spinalis group insertion (of erector spinae muscles) |
|
Definition
| most medial of erector spinae muscles and extends to the spinous processes of T1-T8 |
|
|
