Posterior spinal muscles Flashcards
What muscles make up the erector spinae group?
Iliocostalis
Longissimus
Spinalis
Semispinalis
What causes extension of the spine?
Concentric (shortening) contractions of the posterior muscles
Where are the insertions?
Superior to their origins
What are the major posterior spinal muscle groups?
Superficial
Erector spinae
Transversospinalis
What are the muscles that make up the superficial muscle group?
Serratus posterior superior
Serratus posterior inferior
Where do the erector spinae muscles run?
Superior to inferior either side of the vertebral column
What are the muscles of the iliocostalis?
Iliocostalis cervicis
Iliocostalis thoracis
Iliocostalis lumborum
What movements are created by the iliocostalis muscles?
Extension (bilateral activation)
Lateral flexion (unilateral activation)
Rotation (unilateral activation)
Where is the origin of the iliocostalis cevicis?
Ribs 3-5
Where is the insertion of the iliocostalis cervicis?
C4-C6
Where is the origin of the iliocostalis thoracis?
Ribs 7-12
Where is the insertion of the iliocostalis thoracis?
Ribs 1-6
C7
Where is the origin of the iliocostalis lumborus?
Sacrum L1-L5
Where is the insertion of the iliocostalis lumborus?
Ribs 7-12
What muscles make up the Longissimus group?
Longissimus capitis
Longissimus cervicis
Longissimus thoracis
