Simultaneously, our upright posture put the trachea and esophagus in a near-vertical orientation.
Only humans have a natural upright posture.
The upright post with a transverse piece upon which Jesus was crucified.
Try to maintain an upright posture while sitting or walking.
Why do humans walk on two legs? Our ancestors evolved an upright posture well before our large brains or stone tools even appeared.
A device usually consisting of two upright posts supporting a crossbeam from which a noose is suspended and used for execution by hanging; a gallows tree.
