The Five Sense Organs – the eyes, ears, nose, tongue, and skin

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The Five Sense Organs – the eyes, ears, nose, tongue, and skin.

These 5 Are- ( I ) Skin ( Ii ) Eyes ( Iii ) Nose ( Iv ) Ears ( V Tongue


It Is Also Called The Sense Of Touch. They Are Also Called Touch Receptors.

Due To Touch, We Feel The Size, Type, Hardness And Softness Of Objects.

The Skin Has Sensory Receptors That Are Unevenly Distributed Throughout The Body.

When There Is A Trauma To The Skin, Its Sensation Is First Felt In The Pain Recipient.

Its Information Reaches The Front Of The Brain (Cortex – Cerebrum) Through Sensory Nerves.

Sensation Of Pain Arises In The Cortex.

There Are 2 Layers Of Skin-

(I) Upper Layer, It Is Called Epidermish

(Ii) Inner Layer, It Is Called Dermish.

Sebaceous Glands, White Glands, Blood Vessels, Touch Particles Etc. Are Found In ‘Skin’.

The ‘Epiderm’ Keeps Coming Out Of The Body From Time To Time, Which Is Called ‘Keratinisis Or __Moulding Of Skin’.

The Case Of SP Is An Example Of This.

The Temperature In The Body Is Controlled By The Contraction And Circulation Of Blood Vessels, In The Case Of Hypothermia, The Blood Vessels Constrict, Which Increases The Pressure Of Blood In The Blood Vessels.

In Such A Situation, The Heart Has To Work More For Blood Circulation.

In This Condition, The Heart Needs More Energy And The Cells Have To Do More Work For This Energy, Which Leads To An Increase In Temperature.

In Case Of High Temperature, The Blood Vessels Dilate.

As A Result, The Blood Pressure In The Blood Vessels Decreases.

The Color Of The Skin Is Due To A Pigment Called ‘Milanine’.

The Five Sense Organs - the eyes, ears, nose, tongue, and skin.
The Five Sense Organs – the eyes, ears, nose, tongue, and skin.

Eyes – Eyes Are A Sensory Organ Through Which The Sight Of Objects Is Perceived.

Eyes – Eye Consists Of The Following Parts- Cornea, Iris, Tara (Pupil), Retina, Lens, Ciliary Body And Sclera, Etc.

The Cornea Is Transparent, Which Is The Outer Layer Of The Tunica Fibrosa Aquili Of The Eyeball (In Which The Whole Eye Is Located, It Is Called The Eyeball).

Eyes – In Eye Donation, Only ‘Cornea’ Is Donated.

Iris Iris ( Asterisk ): Eyes – The Inner Part Of The Eyeball Is Called Iris And The Posterior Part Is Called Choroid .

There Is A Circular Hole In The Central Part Of The Iris, Which Is Called ‘ Pupil  ( Star ) .

The Reason For The Black Color Of The Pupil ( Star – Pupil ) Is That There Are 2 Muscles Found In It – The Pupil Sphincter (Pupillae) And The Pupil Dilatator (Dialator Pupillae), Which Do Not Allow Light To Be Reflected. (When An Object Absorbs All The Rays Of Light, It Appears Black.

The Ciliary Body Controls The Focus (Namyantar) Of The Lens.

It Consists Of 2 Muscles Called Rods And Cones .

The Posterior Part Of The Retina Is Called The Fundus Oculi .

It Has 2 Sub-Parts – Yellow Point ( Macula Lutea ) And Optic Disk .

Visual Nerves Emerge From The Point Of View, Which Give Information About The Image To The Brain.

The Image Of An Object Is Formed Only On The Optic Disk Or Blind Spot.

The Yellow Dot Has A Large Number Of Cone Cells , Which Are Responsible For Seeing The Object Clearly. The Rods Of The Retina Help To See Objects In Low Light (In The Dark), While The Cones Are Sensitive To The Colors Of The Object.

The Total Number Of Retinal Cells Is 13,00,00,000.

The Lens Of The Eye Works Like A ‘ Convex Lens  .

The Intensity Of Light Is Controlled By The ‘ Star ‘ ( Iris ) In The Eye.

In Bright Light, They Expand And Compress The Star ( Pupil ), So That Less Light Enters The Lens, And In Dim Light Conditions, The Star ( Iris ) Compresses And Expands The Size Of The Star (Pupil), So That The Light More Amount Can Fall On The Lens.

There Is A Hole In The Middle Of The Iris , It Is Called The Pupil Or Star , Which Acts Like The Diaphragm Of The Camera .

Note: The Diseases Related To The Formation Of Pictures On The Eye Will Be Studied Under Light In Physics.


This Is The Olfactory Sensory Organ. The Smell (Smell) Is Experienced In The Cerebrum.


It Has 3 Parts – Outer Ear, Middle Ear And Inner Ear. Cartilage Is Made Of Flexible Bone.

Ears – The Middle Ear Serves To Connect The Outer And Inner Ear. In The Middle Ear, The Malleus, Incus And Stapes Are Made Up Of 3 Cochleas (Bones Of This Part Of The Ear), Which Conduct Sound Vibrations From The Inner Ear To The Inner Ear. Reaches Karna.

The Inner Ear Is Made Of Semi-Transparent Membrane, Which Is Called ‘Membranous Labyrinth’.

There Are 2 Holes Outside The Kala Gahan, Which Are Called Elliptical Gavachha And Circular Gavachha.

The Circular Band Is Divided Into Two Sac-Like Small Sacs Called Utriculus And Sacculus.

Ears Perform The Function Of Body Balance And Hearing.

Tung – Tongue

It Is The Taste Receptor Organ. Taste Buds Are Found On The Tongue.

The Taste Of An Object Is Known Only When The Mucus First Dissolves The Particles Of Food.

In The Dissolved State, Nerve Sensory Cells Get Excited And Receive The Stimuli Of Taste.

There Are 4 Types Of Taste Experience On The Tongue. These Are Sweet, Tartly Salty And Sour.

Which Is The Largest Bone In The Body


What Protein Are Made Up Of Hair And Nails


Which Bone Is The Hardest Part In The Human Body

Enamel Bone

How Many Bones Are There In The Bone Part Of The Head – 'Skull'


Where Is The Smallest Bone Of The Body – 'Stapes'


Which Part Of The Brain Controls The Temperature Of The Body


Which Part Of The Brain Maintains The Balance Of The Body During Cycling


What Is The Reaction Of The Central Nervous System In An Organ In Response To A Stimulus Called

Reflex Action

Which Part Of The Body Controls The Variable Action

Spinal Cord

Skin Color Is Due To Which Pigment


What Is 'Keratinisis'

Epidermis Exit

On Which Part Of The Eye Is The Image Of The Object Formed


In The Event Of Eye Donation, Which Part Of The Eye Is Donated


Which Part Controls The Light Falling From Outside In The Eyes


How Does The Lens Of The Eye Work

Convex Lens

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