Spine muscles Flashcards
Sternocleidomastoid - Origin
O= Sternum - Manubrium - Superior aspect
Clavicle - Medical aspect
Sternocleidomastoid - Insertion
I= Skull - Mastoid Process - Lateral surface
Sternocleidomastoid - Actions
Neck flexion
Neck lateral flexion
Neck rotation
Head extension
Rectus Abdominis - Origin
O = Pelvis - Pubic symphysis and Pubic Ramus
Rectus Abdominis - Insertion
I = Sternum - Xiphoid process
Ribs - Costal cartilage 5-7
Rectus Abdominis - Actions
Trunk Flexion
External Oblique - Origin
O= Ribs 5-8 - External surface
External Oblique - Insertion
I= Linea albia
Pubic crest and pubic tubercle
Pelvis - superior iliac spine
Pelvis - lateral aspect Iliac Crest
External Oblique - Actions
Horizontal trunk rotation
Lateral trunk flexion
Trunk flexion
Internal Oblique - Origin
O= Spine - Thoracolumbar fascia
Pelvis - Iliac crest
Pelvis - Inguinal ligament
Internal Oblique - Insertion
I= Pelvis - pubic crest
Linea albia
Ribs - lower 3-4
Internal Oblique - Actions
Horizontal trunk rotation
Lateral trunk flexion
Trunk flexion
Transverse Abdominis - Origin
O= Ribs- lower 6
Thoracolumbar fascia
Pelvis- Iliac crest
Inguinal ligament
Transverse Abdominis - Insertion
I= Pelvis - Pubic crest
Linea Alba
Ribs - lower 3-4
Transverse Abdominis - Actions
Hollowing