I think you might be thinking of the esophagus.
A follicle is the tubelike structure from which hair grows.
Esophagus
Smooth Muscles line the walls of tubelike structure such as the gastrointestinal tract, the urinary system, the blood vessels and the bronchi of the lungs.
Ureter. The urethra connects the bladder to the outside world.
The space within a tube-like structure is called a lumen. Parts of the body with lumens include veins and arteries.
tubular
tubelike streucture
A vascular plant contains bundles of tubelike cells which transport water and food throughout the plant
Hair Follicle
Hair Follicle
Moisture
A landspout is a tornado that is not assciated with a mesocyclone, often taking on a tubelike appearance.