Demonstrate the boundaries of the anterior and posterior triangles of the neck and recall the contents of each

Question 1

Describe and demonstrate the boundaries of the anterior triangle of the neck

Answer 1

• Medial border = midline of neck - like a sagittal line going down the middle of the neck
• Lateral border = anterior border of the SCM
• Superior border = inferior border of the mandible

Question 2

Describe and demonstrate the boundaries of the posterior triangle of the neck

Answer 2

• Medial border = lateral border of the SCM
• Lateral border = medial border of the trapezius
• Inferior border = middle 1/3rd of clavicle

Question 3

List the contents of the anterior triangle of the neck

Answer 3

• Hyoid bone
• Common carotid artery
• Internal jugular vein
• Supra-hyoid muscles x 4- stylohoid, digastric, mylohoid, geniohyoid
• Infrahyoid muscles x 4 - omohyoid, sternohyoid, thyrohyoid, sternothyroid

Question 4

List the contents of the posterior triangle of the neck

Answer 4

• External jugular vein
• Subclavian vein
• Subclavian artery
• Trunks of brachial plexus
• Phrenic nerve
• Vagus nerve
• Spinal accessory nerve

Question 5

Describe the course of the internal jugular vein

Answer 5

• Runs parallel and lateral to the common carotid artery

Question 6

Describe the course of the external jugular vein

Answer 6

• Runs from the angle of the mandible to the middle of the clavicle