CHAPTER 43, HOW SOUND TRAVELLS INTO EAR.WHICH FREQUENCY RANGE IS AUDIBLE TO HUMAN? HOW MANY PARTS OF THE EAR? WHAT IS EXTERNAL EAR AND MIDDLE EAR?

 

 

[ইংরেজীতে প্রকাশিত করা হল কিছু কিছু বাংলাদেশী বংশোদ্ভূত বিদেশে অবস্থানরত ছাত্র পাঠকেরা যারা বাংলা ভাষা পড়তে পারেনা, তাদের অনুরোধে, দুখিত]

Dear viewers,

It is written as a primary knowledge for the students who are interested in studying medical sciences. Today we are going to discuss how sound travels, which frequency range is audible to us,  how many parts of the ear,  what is external ear and middle ear?

Ear- Our Ear Can’t Hear every Type of Sound, Our Eye Also Can’t See every Type Of Light Wave, A Man May Become Invisible To Others, Chapter  29 (3)  

Ear- Our Ear Can’t Hear every Type of Sound, Our Eye Also Can’t See every Type Of Light Wave, A Man May Become Invisible To Others, Chapter  29 (3)  

VISIBLE SPECTRA

Figure-1

Link- https://en.wikipedia.org/wiki/Nanometre

Figure-2

Source of the figure- https://human-memory.net/sensory-cortex/

How we can hear- text

Ear, The Way We Hear Sound, How The Sound Enters Into Ear, Chapter 27 (1)

EXTERNAL AUDITORY MEATUS TEXT

FIGURE-3

SOURCE OF THE LINK- TEXT. Frontiers | Anatomy and Development of the Mammalian External Auditory Canal: Implications for Understanding Canal Disease and Deformity (frontiersin.org)

MIDDLE EAR TEXT

FIGURE-4

SOURCE OF FIGURE IN TEXT-  https://en.wikipedia.org/wiki/Middle_ear

Gross Anatomy of the Middle Ear – Boundaries ,Contents and Functions ( Animation )

Figure-5

Source of the you tube link-  Gross Anatomy of the Middle Ear – Boundaries ,Contents and Functions ( Animation ) – YouTube

Figure-6

Special Senses | Ear Anatomy | Model

FIGURE-7

Source of you tube- https://www.youtube.com/watch?v=8nzFCQOs7Ug

JOURNEY OF SOUNDS TO THE BRAIN.OGV

Figure-8

Figure-9

Source of the you tube of both no 8 and no 9 the above- Ear – Wikipedia

DATE: 8/4/2022

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