Lower Pharynx

Question 1

Arterial Supply

Answer 1

Pharyngeal branches from inferior thyroid artery (from thyrocervical trunk of subclavian artery)

Question 2

Venous Drainage

Answer 2

Superiorly into pterygoid plexus, inferiorly into facial and internal jugular veins

Question 3

Nerve Innnervation

Answer 3

Sensory: maxillary nerve of trigeminal (nasopharynx); glossopharyngeal (oropharynx); superior laryngeal nerve of vagus (laryngopharynx)

Question 4

Anatomical Level

Answer 4

C4: hyoid bone; C6: cricoid cartilage, lower limit of pharynx and larynx, upper limit of oesophagus and trachea