Describe the tear pathway from start to finish.
Tears are produced by the lacrimal gland and the accessory lacrimal glands and cover the cornea. Tears then drain out the punctum in the medial eyelids, flow down the canaliculi into the lacrimal sac. They then drain down the nasolacrimal duct into the nose at the inferior meatus (under the inferior turbinate).
very nice book
really impressed by easy language and explanation……..
more than great
thanks
I am so suprise. There is only one word to descripe, cool! It is easy, interesting and understandable.
Walla baba bash ,
Awa aw sitay la ke detawa
thıs answer ıs not acceptable becouse we use pathway for nerve and thıs pathway start from nucleus ın braın through facıal nerve and greater petrosal nerve enter the pterıgoıd canal and then to enter pterıgopalatın ganglıa and post ganglıonıc fıber travel through maxıllary nerve and zygomatıc nerve zygomatıcotemporal then lacrımal nerve and then supply lacrımal gland .and for tear we use secretıon or draınge ınstead of pathway wıth best regard
Great book! Thank you for compiling such a valuable book. It is very easy understand the subject with your help. Very very interesting too!
Excellent teaching resource
Thank you this really help me and you made it easy, and simple!!
thanx
Excellent Explanation and very nice language
Thank you so much.
How does the tear get from the lacrimal gland into the surface of the eyeball? Can you go over that process between tear production in lacrimal gland and drainage via puncta?
The tears is produce by the meibomian gland ( produces the oily layer), lacrimal duct(produces watery or aqueous layer), and the goblet cell (produces the mucus layer).
Then it is drained via the lacrimal punctum to the canaliculi, to the lacrimal sac and via the nasolacrimal duct into the inferior nasal meatus to the nasal cavity where it is evaporated.
Wonderful description however it will hve been well to tell us does it flow in anterior and posterior chambers of the eye
What are the chemical composition of tears?? Describe the bacterial properties of tear
Good work