Sense organs and Receptors in Humans

🌟Introduction:-

🔷️Humans interact with their environment using sense Organs, which helps us receive and respond to various stimuli, like light, sound, smell, taste, and touch. Each sense organs contains specialised Receptors that detects specific type of stimuli and send signals to the brain through nerves.  The process is a crucial part of the nervous system, and plays Key role in maintaining coordination and survival.

📚Key concept:- 

🔷️Receptors are specialised cells of nerves endings that detects specific stimuli. Each sense organs has its own type of Receptors that sends signals to the brain via sensory nerves. 

All 5 type of sense organs are:- 

Sense organs	Type of Receptors	Functions	Location of Receptors
Eyes	Photoreceptors	Detect light, colour, and vision	Ratina(rods & cones)
Ears	Phonoreceptors also mechanoreceptors.	Detect sound and balance	Inner ear (cochlea & semi-circular canals )
Nose	Olfactory Receptors	Detect smell/odour	Nasal cavity(olfactory epithelium)
Tongue	Gustatory Receptors	Detect taste(sweet, sour, bitter, Salty, umami)	Taste buds on the tongue.

📌Real life Example 1:- 

When a car horn blows, sound vibration are directed into our ear’s Receptors, these signals are sent to the brain which quickly interpret it is danger, promoting to move away.

📌Real life example 2:- 

When you accidentally touches something hot, receptors in the skin detects the heat and pain. This signals the brain and you immediately pull you hand back.