Insertion and Origin Flashcards
(141 cards)
Rectus Capitis Posterioi Major
O: Spinous process of the axis (C2)
I: Lateral part of the inferior nuchal line of the occipital bone and area of bone just inferior to the line
Rectus Capitis Posterior Minor
O: tubercle on the posterior arch of the atlas
I: Medial part of the inferior nuchal line of the occipital bone and the area of bone between the line and foramen magnum
Obliquus Capitis inferior
O: Apex of the spinous process of the axis (C2)
I: inferior and posterior aspect of the transverse process of the atlas (C1)
Obliquus Capitis Superior
O: Superior surface of the transverse process of the atlas
I: Occipital bone between the superior and inferior nuchal lines lateral to the semispinalis capitis
Anterior Scalene (Scalenus Anterior)
O: Anterior tubercles of the transverse processes of C3 to C6 I: Scalene tubercle on the inner border of the upper surface of the first rib and the ridge on the upper surface of the rib anterior to the groove for the subclavian artery
Middle Scalene (Scalenus Medius)
O:Transverse process of the
axis (C2); Anterior aspect of the posterior tubercles of the transverse processes of
C3 to C7
I: Superior aspect of the first rib between the tubercle of the rib and the groove for the subclavian artery
Posterior Scalene (Scalenus Posterior)
O: Posterior tubercles of the transverse processes of C4 to C6 (or C5 to C7 – another source) I: Lateral surface of the second rib; occasionally blended with the scalenus medius
External Intercostals
O: Lower border of ribs 1–11
I: Upper border of ribs below 2 - 12
Internal Intercostals
O: Superior border of ribs 2-12
I: Inferior border of ribs above 1-11
Subcostals (innermost intercostal)
O: Internal surface of the angles of the lower ribs (6-12)
I:Internal surface of the second or third rib inferior to the origin
Transversus Thoracis
O: Posterior surface of the body of the sternum, the posterior surface of the xiphoid process, the sternal ends of the costal cartilages of the lower 3 or 4 true ribs
I: By slips into the lower borders and inner surfaces of the costal cartilages of ribs 2-6
Diaphragm
O: Xiphoid process, cartilages of ribs 7-12, anterior surfaces of the lumbar vertebrae, crura of the upper two and three lumbar vertebrae
I: Central tendon that blends with the anterior longitudinal ligament of the vertebral column
Trapezius
Upper Fibres -
O: superior nochal lines, external occipital protuberance, medial margin of the ligamentum nuchae
I: Posterior border of the lateral 1/3 of the clavicle, acromion process
Other fibres -
O: Spinous processes C7-T12 and the supraspinous ligaments
I: Superior edge of the crest of the spine of the scapula
Latissimus Dorsi
O: Spinous processes T7-T12, posterior surface of ribs 9-12, posterior iliac crest, inferior angle of the scapula
I: floor of the intertubercular sulcus of the humerus
Levator Scapulae
O: Transverse processes of C1-C2, posterior tubercles of the transverse processes of C3-C4
I: Posterior surface of the medial border of the scapula from the superior angle to the root of the spine of the scapula
Rhomboids
Minor -
O: Spinous processed C7-T1, the lower portion of the ligamentum nucahe
I: Posterior surface of the medial border of the scapula
Major -
O: Spinous processed T2-T5
I: Posterior surface of the medial border of the scapula
Serratus Posterior Superior
O: Lower portion of the ligamentum nuchae, spinous processed of C7-T3
I: upper body of rubs 2-5
Serratus Posterior Inferior
O: Spinous processed of T9-L3 and supraspinous ligaments
I: Lower border of ribs 9-12
Splenius Capitis
O: Lower half of ligamentum nuchae and spinous processed of C7-T4
I: Mastoid process of the temporal bone & occipital bone, skull below lateral 1/3 of the superior nuchal line
Splenius Cervicis
O: Spinous processed of T3-T6
I: Spinous processed of C1-C3
Iliocostalis (Cervis)
O: Angles of ribs 3 to 6
I: transverse processed of C4 to C6
Iliocostalis (Thoracis)
O: Upper borders of the angles of the lower 6 ribs
I: into the upper borders of the angles of the upper 6 ribs and into the bacl of the transverse processed of C7
Ilicostalis (Lumborum)
O: sacrum, spinous processed of lumbar & lower 2 T vertebrae, iliac crest
I: inferior borders of the angles of the lower 6 or 7 ribs
Longissimus (Capitis)
O: Transverse processed of upper 4/5 thoracic vertebrae, articular processed of lower 3/4 cervical vertebrae
I: posterior margin of the mastoid process, beneath the splenius capitis