Back and Spine

Question 1

Name ligaments in red (middle one is spinous process)

Answer 1

Supraspinous ligaments
Intraspinous ligaments

Question 2

Iliac crests are at what spinous level?

Answer 2

L4

Question 3

Blood supply of cervical vertebrae?

Answer 3

Ascending cervical arteries (branch of thyrocervical trunk, off subclavian), vertebral arteries

Question 4

Blood supply of thoracic vertebrae?

Answer 4

Posterior intercostal arteries

Question 5

Blood supply of lumbar vertebrae?

Answer 5

Iliolumbar and lateral/medial sacral arteries.

Question 6

Innervation of spinal column?

Answer 6

Recurrent meningeal branches of spinal nerves

Question 7

Trapezius (parts, function, attachments, innervation, blood supply)

Answer 7

CN XI (accessory nerve) - motor, C3,C4 - sensory.
Upper fibres - elevate and rotate scapula, extend neck, lateral flexion of neck (when working unilaterally)
Middle fibers - adduct scapula
Lower fibers - depress scapula

Origin - nuchal ligament, spinous processes
Insertion - lateral third of clavicle
Middle - superior crest of scapular spine
Inferior - lateral border of inferior scapula

Blood supply - occipital artery, transverse cervical artery, dorsal scapular artery

Question 8

Latissimus dorsi (parts, function, attachments, innervation, blood supply)

Answer 8

Origin - Spinous processes T5-T12, thoracolumbar fascia, iliac crest,
Insertion - intertubular (bicipital) sulcus of humerus (between teres major and pectoralis major) - “lady between two majors)

Function - depression of arm, internal rotation and adduction of shoulder, extension of arm

Innervation - thoracodorsal nerve (c6-c8)

Blood supply - thoracodorsal artery, perforating rib arteries, 1st-3rd lumbar arteries

Question 9

Serratus anterior (parts, function, attachments, innervation, blood supply)

Answer 9

Origin - lateral surface of 1st-8th ribs
Insertion - medial border of scapula, superior and inferior tip of scapula

Function - protraction of scapula (boxer’s muscle), upward rotation of scapular

Innervation - long thoracic nerve C5-C7

Blood supply - lateral thoracic artery, superior thoracic artery, thoracodorsal artery