ANATOMY OF EXTERNAL EAR - Dr.G.Bhanu Prakash

📌 𝐅𝐨𝐥𝐥𝐨𝐰 𝐨𝐧 𝐈𝐧𝐬𝐭𝐚𝐠𝐫𝐚𝐦:- / drgbhanuprakash
📌𝗝𝗼𝗶𝗻 𝗢𝘂𝗿 𝗧𝗲𝗹𝗲𝗴𝗿𝗮𝗺 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗛𝗲𝗿𝗲:- t.me/bhanuprak...
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The outer ear is situated superficially next to several bony landmarks. It is posterior to the zygomatic process of the temporal bone as well as the proximal part of the mandibular process and the auricular surface of the mandibular notch. Superior to it is the squamous part of the temporal bone, while the styloid process is located inferiorly. Finally, the mastoid process of the temporal bone lies posteroinferiorly with respect to the outer ear. There is very little subcutaneous tissue between the auricular scaffold and the overlying skin of the ear. The skin, however, continues into the external acoustic meatus and covers the lateral surface of the tympanic membrane.
Before the different parts of the external ear can be discussed, it is important to note that the left and right ears are optical isomers of themselves (similar to the left and right hands). This is relevant because the different parts of the external ear can be related to a clock face. However, the position of one structure, for example the tragus, will be in a 9 o’clock position on the left, but in a 3 o’clock position on the right. The left ear will be used as an example throughout, but keep in mind the mirroring necessary to discuss the right ear.
On that note, the tragus is the first of several cartilaginous flaps in the ear. As previously mentioned, it projects posteriorly from the 9 o’clock position to provide a lateral border to the distal end of the external acoustic meatus. Posteroinferior to the tragus in the 5 o’clock position is the antitragus. It is also a cartilaginous structure that is separated from the tragus by an intertragic notch. Superior to the tragus in the 10 o’clock position is the crus of the helix. It starts at the concha of the auricle (depression at the orifice of the external auditory meatus that corresponds with the protruding eminentia conchae on the posterior surface of the ear) and extends anterosuperiorly in the 10 o’clock position (superior to the tragus) and continues as the prominent ridge known as the helix. The helix is the outermost concaved section of the ear and it has a small protuberance at the 2 o’clock position called the auricular tubercle. The helix continues inferiorly and ends in the 4 o’clock position at the tail of the helix. Another raised cartilaginous structure called the antihelix mirrors the path of the helix. Apically, the antihelix has two crura surrounding a depression known as the triangular fossa. The antihelix is separated from the helix by the scaphoid fossa (corresponding to the eminentia scaphae on the posterior aspect of the external ear). Finally, in the 6 o’clock position is the soft, fibrofatty structure called the lobule.
There are two groups of muscles associated with the external ear. The intrinsic group of muscles consists of the tragicus and antitragicus, obliquus auriculae, transversus auriculae and the helicis major and minor. The tragicus muscle lies vertically on the lateral aspect of the tragus. It is a flat, short muscle that is perpendicular to (but not in contact with) the antitragicus muscle. Antitragicus originates from the anteroinferior part of the antitragus to the tail of the antihelix and helix. Helicis minor travels obliquely along the crus of the helix, while helicis major courses over the anterior boundary of the helix after travelling vertically over its spine. The obliquus auriculae and transversus auriculae muscles are found on the posterior (cranial) part of the external ear. The former extends from the upper part of the eminentia scaphae to the eminentia conchae, while the latter bridges the inferior aspect of the same two structures.
The extrinsic muscle group includes the anterior, posterior and superior auricular muscles. Auricularis posterior originates as three aponeurotic muscular fasciculi from the mastoid process to insert in the ponticulus (oblique ridge on the eminentia conchae) on the cranial aspect of the external ear. Auricularis anterior begins in the epicranial aponeurosis and inserts in the spine of the helix. It is the smallest of the three extrinsic muscles. Thirdly, auricularis superior is the largest of the extrinsic muscles. It also begins at the epicranial aponeurosis and inserts in the cranial part of the auricle.
The extrinsic muscles have limited impact on the movement of the external ear. The intrinsic muscles, however, are able to modify the shape of the auricle to a minor degree. Helicis major is known to move the auricle anteriorly and superiorly.
#anatomyofexternalear #externalear #earanatomy #anatomyofear #outerear

[@dr_subhammohanty01]

I don't think, there can be any video better than this for external ear anatomy...👏👏

[@doctorbhanuprakash]

Tysm

[@singhinmkcg3617]

Kabhi ninja nerd ka nam suna hai

[@faisalrashid9864]

@@singhinmkcg3617 dr Najeeb ka nam sunna h😂😂

[@singhinmkcg3617]

@@faisalrashid9864 sahi hai bhai

[@sagarrachchh9218]

Sir trust me you explain really very well....i m doing mbbs...and ur videos really help me a lot...please upload more and more...will surely share your videos

[@NAGALLAUSRITHAKRISHNA]

If there are explanations like this there would be no confusion and incredible confidence will built. thankyou soo much sir

[@doctorbhanuprakash]

You are most welcome

[@rajmedico6728]

now i seen a best anatomy doctor who can make me a good known in anatomy.
thanks a lot doctor.

[@awokesamuel4068]

sir God bless and protect u , see, u have made my medical life so Awesome, may u live long, sir please upload the remaining part and also please , do something on mediastinum, leg, foot, abdomen, pelvis and perineum, head and neck,neuroanatomy in fact I want to learn anatomy through u, sir ur videos are incredibly awesome

[@doctorbhanuprakash]

Thank u

[@morgue_artcorporelle]

Ngl this is one of the best videos out there breaking down and teaching the anatomy! Thanks so much!

[@bilalmushtaq3810]

Best platform for learn clinical anatomy 💯👌👌👌❤️❤️❤️❤️❤️

[@brijeshner]

Love this video sir .This one cleared a lot my concept.Thanks and hope next others are also full of illustrations

[@rohitrathod3166]

Excellent, well Explained, An Proud Indian by Indian .

[@doctorbhanuprakash]

thank you

[@Nihit]

Excellent method and it is nice to see videos based and focused on concept clearing.
I really appreciate the effort put in explaining with the help of diagram and not just showing slides.
Please keep posting more of such videos for nose and throat as well.

[@doctorbhanuprakash]

thank u

[@ramgopalnagalla4453]

thanks sir.that was a beautiful lectures.looking forward to have more lectures.could you please upload inner ear and middle ear anatomy ,physiology and pathology and a a brief about ear

[@raghunandansirkanungo716]

A very Good Lecture delivered by you Thanks a lot

[@aasiyanadidi8418]

Great explanation.... Very helpful.. Thank you so much sir..😊🤗

[@doctorbhanuprakash]

Ur most welcome

[@Nikita-wu9ux]

This video is really helpful....exact wording of dhingra 👏👏

[@doctorbhanuprakash]

but actually its frm chaurasia

[@muhammadalipitafi3349]

Yes exact words.

[@muhammadalipitafi3349]

Can u help me with dhingra ..mean how i study it .?

[@shajudeenps6562]

Could you plz add anatomy of eye.your presentatn is simple and useful

[@abhaygupta1373]

sir please taught all the topics of Ear , you videos are so simple does not require more time so please make video on Ear as soon as possible

[@doctorbhanuprakash]

suree

[@muhammadshanzaib8802]

Thank you so much sir . You are gem 😍😇♥️
Stay blessed.

[@KDee755]

This was a Great Lecture sir

[@dhruvpatel2529]

Very very nicely and simply explained, please make more videos for anatomy
Specially on sence organs

[@ayeshashahzad6238]

I can't thank you enough sir
This is the best video ever ❤️❤️❤️❤️

[@Venugopal-fk3bn]

Sir iam from apollo medical clg ur classes r just awesome

[@amnashahid2920]

Very easy and learn able lectures .

[@doctorbhanuprakash]

Keep watching

[@meerf]

G bhanu prakash in anatomy and ninjanerd in other subjects
Are ultimate

[@doctorbhanuprakash]

tysm

[@medicomuslimahdr]

Absolutely awesome sir . Thanks a lot sir . This lecture ,Really helped me a lot .

[@tsewangdolma6110]

Very nice explaination sir..thanku very much

[@doctorbhanuprakash]

All the best

[@sumaiya5065]

Sir please come to our Allen for teaching.....gr8 work keep it up.

[@sadiakhan1615]

Good class and helpful thanks for uploading ❤

[@mansurikhalil6774]

very nice lecture sir. it was very informative. we want you to upload more information about middle and inner ear.

[@patelmeet2008]

Sir excellent video for understanding, pls upload more video like this in board work of abdomen region

[@doctorbhanuprakash]

Sure I will

[@pushpavaliraizada]

Thanks I was eagerly looking for this 💐

[@ashimrb2511]

very nice lectures plz upload inner n middle ear

[@Nihit]

Very helpful lecture ..please post more on ENT

[@rajniranjan18]

i am so thankful sir for this vedio and also i want the same for tme middle ear and inner ear plzz sir make it soon...

[@Himanshu-pj4wk]

thank you sir for this awesome lecture...pls continues making such videos

[@87saurabchakraborty36]

Both the videos are awesome

[@atmo8672]

Nice.. said all the relevant points!!

[@lashmanankv1839]

Perfect !!!!!!!!!!!!!!!

[@danaghazaleh9117]

Thanks a lot. This was well presented

[@sonijha4109]

awsomely described and told extra point thankyu sir

[@smartrehan315]

Excellent!! Sir thank you so much..
I love you sir...

[@doctorbhanuprakash]

ur most welcome

[@veejetasingh8543]

Very awesome video sir can you plz upload video on internal ear

[@dr.prabhleenkaur8613]

there is no blood supply and nerve supply . nothing about tympanic membrane . sir please upload a video on this also . i have a exam . nd i understand well from you .

[@nishachavan4683]

The explanation is so good🥹

[@mohammadibegum5766]

Plz continue to upload for next topics...

[@soniababu7193]

Just brilliant. Thank you!!

[@tarunkasana9749]

Very good class sir
Please do more videos on other topics

[@Princess-cl6tp]

Bestest video thank you so much

[@saipriyaj4150]

Good class Sir.
Please do finish by posting videos for middle and inner ear.
Thank you.

[@doctorbhanuprakash]

Saipriya J suree....

[@meghnamaumaliya6228]

Amazing video sir. Thank you.😊

[@zoharacuty1430]

Thanks a lot sir ..I learned through it

[@87saurabchakraborty36]

Sir plz describe the external ear as middle ear

[@Drmuslimah2019]

U also explain clinical pts ....that is great

[@mohammadibegum5766]

Thank you so much sir 🙏🙏🙏🙏awesome explanation

[@doctorbhanuprakash]

Most welcome

[@madhumanyam5259]

super sir clear voice

[@priyankajeyaram5235]

Very good explanation thank u sir

[@doctorbhanuprakash]

You're most welcome

[@pashamnikitha12]

Thank you sir...🙂🙂

[@ankitaranisinhatheinnovato6980]

Superbbbb sir forward the further part

[@mohdfazal3370]

Sir can u explain , how foreign body gets lodged medial to isthmus of bony part of external acoustic meatus ? bcz it has to pass through isthmus only . why it becomes difficult to remove the foreign body ?

[@86ujjwalsingh76]

Such a nice explanation 🥳
2nd part??

[@Hassankhiyal]

Great and helpful work sir ❤️

[@nagumanbaloch3656]

tnx sir..please upload more lecture of anatomy

[@varshamiriyala8699]

pls upload middle ear and inner ear videos sir

[@priyangaravi2351]

awesome lecture sir.. tanx

[@abduali6680]

Great explanation, thanks a lot

[@doctorbhanuprakash]

Glad it was helpful!

[@thedoctortheguider7464]

Assalam u alaikum sir
I am unable to find that foramina which you told that is present in anteroinferior of bony canal
Can you write the name of that foramina please ...

[@Isumi03]

Perfect!👏❤️

[@shitalnakiya1513]

Thank you sir
That's very fine video

[@sherondeko1283]

Many thanx for your knowledge

[@dancingdoctor4109]

i was reading scott brown,,, it was so hard to understand.. this helped

[@lakshmisannala5027]

Nice explanation sir

[@expressionbyennuu7541]

Excellent lecture...

[@dipuno2827]

sir..May you live long.may u can upload more and more videos

[@doctorbhanuprakash]

Thank u

[@dipuno2827]

welcome sir

[@angellaturner4584]

Thanks sir God bless you

[@minhazislam3273]

Justtt awesomeeee

[@abhirockz5508]

sir i think you missed tympanic membrane . but the lecture is awesome.

[@pushpavaliraizada]

Very useful 💚

[@tanzeelazafar2400]

Bestest one👌

[@bilalmushtaq3810]

Sir g tusi great o 👌

[@doctorbhanuprakash]

Tysm

[@geojor]

thanks for sharing your expertise...

[@lavanya5230]

Sir really gd lecture,pls some more videos

[@doctorbhanuprakash]

sure

[@priyakanth8472]

superb sir

[@kuttykutty...5962]

I ask one dout why present in outer ear in our body pls explain

[@faizbipu1573]

Thanks a lot

[@krishnaloveforconsciousnes7284]

Wonderful 🤗🤗🤗🤗😃😃

[@keepgrinding1198]

Hello Sir, :)
The auricular conchae is divided further into Cymba conchae and Cavum conchae by the crux of helix.
Correct me if it’s inaccurate.

[@doctorbhanuprakash]

yess

[@keepgrinding1198]

Dr.G.Bhanu Prakash Doctor, last year you have visited my college AMEC BCCM in the Philippines with the plan of starting MCI couching classes, I was very much looking forward to it. But there is no more update regarding that. Can you please give an update.

[@shrutighuntla1158]

thank you sir!

[@doctorbhanuprakash]

You are welcome!

[@shaikharisha9213]

It was good thanks sir

[@zameersufiyan327]

sir middle and internal ear anatomy plzz sir ..make it soon

[@05aishwaryakatwe87]

V nice sir upload more videos 😊

[@doctorbhanuprakash]

Sure I will

[@ratan2160]

thanks sir awasome video

[@doctorbhanuprakash]

+dr. ratan Kumar thank u

[@12urvic]

Sir give me anatomy of middle ear .......and of spinal cord , 3rd ventricle ,4th ventrile...

[@doctorbhanuprakash]

ok sure , to access all lectures visit www.medvizz.com

[@zainabyounas1141]

Best😊

[@doctorbhanuprakash]

Tysm

[@vishnujadhav2345]

nice lecture sir

[@vivekchourasiya4688]

nice helpful video

[@satyam7211]

Super sir

[@amolgupta3220]

SIR PLZ UPLOAD THE VIDEOS OF MIDDLE AND INNER EAR

[@aarthimanokaran7197]

can anyone send the continuation of ths video link

[@mzafar8177]

awsum lecture.someone can share the other remaining parts cant find them

[@Drmuslimah2019]

Thanks a lot sir

[@shivanibhardwaj4229]

Sir please give the lacture on internal ear