The Trunk & The Neck Flashcards
Trunk Extensors
Erector Spinae
origins: posterior sacrum; posterior iliac spine; spinous processes of lower vertebrae; transverse processes of lower vertebrae
insertions: posterior side of ribs; spinous processes of upper vertebrae; transvere processes of upper vertebrae; mastoid process
nerve: cervical- lumbar nerve roots
Rectus Abdominis
origin: superior side of pubis
insertions: xiphoid process; costal cartilage of ribs 5-7
nerve: T6-T12 nerve roots
External Abdominal Oblique
origin: lateral side of ribs 5-12
insertions: anterior 1/2 of iliac spine; superior side of pubis; linea alba
nerve: T7-T12 nerve roots
Internal Abdominal Oblique
origin: iliac spine; inguinal ligament
insertions: ribs 10-12; costal cartilage of rib 7-10; linea alba
nerve: T7-L1 nerve roots
Trunk Lateral Flexor
Quadratus Lumborum
origin: iliac spine
Insertions: rib 12; transverse processes of L1-L5 vertebrae
nerve: T12-L4 nerve roots
Neck Flexors
Sternocleidomastoid
origins: manubrium; proximal clavicle
insertions: mastoid process
nerve: c2-c3 nerve roots
Scalenes
origin: transverse processes of C1-C7
insertions: first and second ribs
nerve: accessory nerve & C3-C8 nerve roots
Neck Extensors
Upper Section of the Trapezius
origins: occipital protuberance; spinous processes of upper C-spine
insertions: superior side of scapular spine; distal 1/3 clavicle; acromion
nerves: accessory
Splenius Capitis
origins: distal half of nuchal ligament
insertions: occipital bone; mastoid process
nerve: C3-C8 nerve roots
Splenius Cervicis
origins: spinous processes of T3-T6
insertions: transverse processes of C1-C3
nerve: C4-C8 nerve roots
Semispinalis Capitis
origin: transverse processes of C4-T4
insertions: between superior & inferior nuchal lines
nerve: greater occipital
Semispinalis Cervicis
origin: transverse processes of upper T-spine
insertions: spinous processes of C-spine
nerves: C3-C5 nerve roots
