Neck: root and prevertebral region

Neck: root & prevertebral region
Objectives
By the end of this lab students are expected to be able to
1. Describe the scalenus anterior (key muscle of the root of the neck) and its relation
2. Discuss the course, parts, and branches of the subclavian artery
3. Describe formation, course and tributaries of the subclavian vein
4. Discuss the location, parts, & distribution of cervical part of sympathetic trunk.
5. Comprehend the different course of the right and left recurrent laryngeal nerves
6. Relate the phrenic nerve to the supraclavicular nerves
Lab check list
? Scalenus posterior.
? Scalenus medius.
? Scalenus anterior.
? Anterior relations:
o Phrenic nerve
o transverse cervical artery
o suprascapular artery
o Subclavian vein
o Inferior belly of omohyoid
o Carotid sheath
? Posterior relations:
o Roots of brachial plexus
o Subclavian artery (1st, 2nd, 3rd)
o Scalenus medius muscle
o Cervical pleura.
o Suprapleural membrane
? Vertebral artery
? Thyrocervical trunk
? Inferior thyroid artery
? Thoracic duct
? Sympathetic trunk (stellate ganglion)

Home work:
Q1: what features of Horner’s syndrome you see in the picture below?
Horner’s syndrome:
Image source: http://dxline.info/diseases/horner-syndrome
Q2: after a stab wound of the neck, a chest X-ray may be indicated to exclude the possibility of blood collection in the posterior mediastinum or the pleural space. How does the blood reach from the neck down to these two spaces?