User: All endocrine glands are ductless. What does that mean?

Weegy: ... about the endocrine system and I did find out that the endocrine glands are in fact ductless. ... What does it mean when a bad idea wont leave your head is it true? [http://wiki.answers.com/Q/What_is_the_ductless_gland_under_the_breastbone]
Auto answered|Score .7823

User: What is the function of the Eustachian tube?

Weegy: It connects the ear to the sinus passages and allows an equalization of pressure. According to Wikipedia: [http://en.wikipedia.org/wiki/Eustachian_tubes] "The Eustachian tube (or auditory tube) is a tube that links the pharynx to the middle ear. [ In adults the Eustachian tube is approximately 35 mm long. It is named after the 16th century anatomist Eustachius. Some modern medical books call this the pharyngotympanic tube... Normally the Eustachian tube is closed, but it can open to let a small amount of air through to equalize the pressure between the middle ear and the atmosphere. When this happens we hear a small pop, an event familiar to aircraft passengers or drivers in mountainous regions. Yawning or swallowing can pull on muscles in the neck, causing the tube to open. Without this airway, air would be unable to escape from one's ear, the middle ear would be isolated from the atmosphere, and could be easily damaged by pressure changes. Some people are born with the ability to contract just these muscles voluntarily, similar to people who can wiggle their ears." I can voluntarily control my Eustachian Tube, big deal, who cares. It only means that I don't suffer an air pressure differential. http://answers.yahoo.com/question/?qid=20080526172741AA0xDd3 ]
Auto answered|Score .923