Liquids forced on the patient in this extremity may partly flow down the oesophagus, but will also enter the larynx, and their administration should be carefully avoided.
"On Snake-Poison: its Action and its Antidote"
A. Mueller
The anterior gland and the thyroid arise from almost the same spot in the embryonic oesophagus, the thyroid being an outgrowth in front, the anterior pituitary an outgrowth behind of the same soil.
"The Glands Regulating Personality"
Louis Berman, M.D.
The inferior opening leads to the larynx and the superior one to the oesophagus.
"Common Diseases of Farm Animals"
R. A. Craig, D. V. M.