Question

Sense organ in which olfactory receptors are present is:

• A. Nose
• B. Skin
• C. Tongue
• D. Inner ear

Answer 1

The Correct Option is A

Step 1: Olfactory Receptor Definition
Olfactory receptors are specialized nerve cells responsible for detecting smell. They react to airborne chemical molecules, transmitting signals to the brain to identify various odors.

Step 2: Olfactory Receptor Location
These receptors are situated in the superior aspect of the nasal cavity, within the nose. They constitute the primary sensory apparatus for olfaction.

Step 3: Olfactory Receptor Mechanism
Upon inhalation, air containing odorant molecules enters the nasal cavity and reaches the olfactory epithelium. Olfactory receptors bind to these molecules, generating electrical signals that travel via the olfactory nerve to the brain for smell processing and recognition.

Step 4: Nasal Cavity's Role in Smell Detection
The nose serves as the principal organ for smell detection because it contains the olfactory receptors, which are indispensable for this sense. No other human organ fulfills this function.

Final Answer:
Nose