Tag: anatomy

Serratus Posterior Inferior – Functional Anatomy

Serratus Posterior Inferior Serratus posterior inferior originates on T11-L2 and inserts on ribs 9-12, trapping the 9th and 10th thoracic vertebrae. There is a thin sheet of connective tissue that continues from the short belliesContinue reading

Semispinalis Capitis – Functional Anatomy

Semispinalis Capitis Semispinalis Capitis connects the C4-T7 to the occipital bone trapping C1-C3. Dissection studies vary in their report of attachments on the thoracic vertebrae. They show that they not only vary in which vertebrae are attached butContinue reading

Semispinalis Thoracis – Functional Anatomy

Semispinalis Thoracis Semispinalis Thoracis connects T7-T10 to C6-T4 trapping T5-T6 in the middle. Origin – transverse processes of T6-T10 Insertion – Spinous processes of T1-T4 Function – Extension and some rotation of the thoracic vertebrae.     Continue reading

Semispinalis Cervicis – Functional Anatomy

Semispinalis Cervicis Semispinalis Cervicis connects the transverse processes of  T1-T6 to the spinous processes of C2-C5 trapping C6-C7. Origin – transverse processes of T1-T5 or T6 Insertion – Spinous processes of C2-C5 Function – Extension and someContinue reading

Quadratus Lumborum – Functional Anatomy

Quadratus Lumborum Quadratus lumborum, the square muscle in the low back, connects the lumbar vertebrae to the ribs and iliac crest trapping T12 and the sacrum its attachments. Quadratus Lumborum has 3 sections; iliolumbar, lumbocostalContinue reading

Rotatores and Multifidi – Functional Anatomy

Multifidi and Rotatores Multifidi and rotatores form a thick band of muscle that fills the lamina groove. They connect the transverse process of a vertebra to the vertebrae above it. The shortest strand is the deepest. As theContinue reading