The lumen of the trachea is lined by pseudostratified columnar epithelium. Note that all the surface cells have cilia at their free (apical) surface. (What function do these cilia serve in the trachea?) Mucus-secreting unicellular gland cells (goblet cells) are interspersed among the ciliated cells.
Donât think you need to be able to do the modified version perfectly before you try theseâyou just need to feel brave enough to go upside down. To complete a handstand push up: 1  Face a wall in a standing position.  Kick your feet up so youâre in a handstand position against a wall.
Push-ups are a great exercise to develop explosive speed training for the bench press. When you do a push up you lift approximately 60% of your bodyweight. And unlike weight training exercises, you can lift more explosively by doing push ups. I am sure that you have seen people do clap your hands push ups before.