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(ear diagram)
(the ‘eustachian tube’ is labeled ‘auditory tube’)
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(from “gray’s anatomy”)
(1858)
(by ‘henry gray’)
(‘english anatomist’))
(1827 – 1861)
(died @ ‘age 34’)
(‘confluent smallpox’)
(even though he had been given one of the earliest forms of the vaccine)
(while caring for his 10-year-old nephew)
(who eventually recovered)
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/juːˌsteɪ.ʃənˈtjuːb/
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*AKA* –>
‘auditory tube‘
‘pharyngo-tympanic tube‘
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(named after “bartolomeo eustachi”)
(italian scientist)
(‘1500’/’1514’ (?) – ‘1574’)
(studied the ‘ear’)
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*the eustachian tube is a ‘tube’ that links the ‘naso-pharynx’ to the ‘middle ear’*
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(it is considered a part of the ‘middle ear’)
(in adult humans, the ‘eustachian tube’ is approximately 35 mm (1.4 in) long and 3 mm (0.12 in) in ‘diameter’)
(it is named after the [1500s anatomist ‘bartolomeo eustachi’])
(in ‘humans’ + other ‘land animals’, the middle ear (like the ear canal) is normally filled with ‘air’)
(unlike the ‘open ear canal’, however, the air of the middle ear is not in direct contact with the atmosphere outside the ‘body’)
(the ‘eustachian tube’ connects from the ‘chamber’ of the ‘middle ear’ to the back of the ‘nasopharynx’)
(normally, the ‘eustachian tube’ is collapsed, but it gapes open both with ‘swallowing’ + with ‘positive pressure’)
(when taking off in an airplane, the surrounding ‘air pressure’ goes from higher (on the ground) –> lower (in the sky))
(the air in the ‘middle ear’ expands as the plane gains ‘altitude’ + pushes its way into the back of the ‘nose’ + ‘mouth’)
(on the way down, the ‘volume’ of ‘air’ in the ‘middle ear’ shrinks, and a ‘slight vacuum ‘is produced)
(‘active opening’ of the ‘eustachian tube’ is required to equalize the ‘pressure’ between the ‘middle ear’ + the surrounding atmosphere as the plane descends)
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(the ‘diver’ also experiences this ‘change’ in ‘pressure’, but with greater rates of pressure change, active opening of the ‘eustachian tube’ is required more frequently as the diver goes deeper into higher pressure)
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*👨🔬🕵️♀️🙇♀️*SKETCHES*🙇♂️👩🔬🕵️♂️*
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💕💝💖💓🖤💙🖤💙🖤💙🖤❤️💚💛🧡❣️💞💔💘❣️🧡💛💚❤️🖤💜🖤💙🖤💙🖤💗💖💝💘
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*🌈✨ *TABLE OF CONTENTS* ✨🌷*
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🔥🔥🔥🔥🔥🔥*we won the war* 🔥🔥🔥🔥🔥🔥