Attachments & Innervations - Vertebral Column

Question 1

Sternocleidomastoid

Answer 1

Proximal: Upper border of manubrium & upper border of clavicle

Distal: Mastoid process of temporal bone & Superior nuchal line of occipital bone

Innervation: Spinal accessory nerve

Question 2

Erector Spinae

Answer 2

3 muscles: thoracis spinalis, thoracis longissimus & thoracis iliocostalis

Attachments: spinous processes, transverse processes, posterior ribs from occiput to sacrum, ilium

Innervation: Dorsal rami of spinal nerves

Question 3

Rectus Abdominis

Answer 3

Proximal: Xiphoid process & adjacent costal cartilages

Distal: pubic bones (near symphysis pubis)

Innervation: Ventral portion of intercostal nerves

Question 4

External Oblique

Answer 4

Proximal: Anterolateral ribs

Distal: Linear apnea via the aponeurosis & iliac crest

Innervation: Lower intercostal nerves