Question 4 Page 119 - Chapter 7 Class 10 - Control and Coordination

How do we detect the smell of an agarbatti (incense stick)?

Answer

Smell of agarbatti is detected in the following manner:

• The olfactory receptors in the nose receive the stimulus ( smell of agarbatti)
• Information is collected by the dendrite tips of sensory nerves .
• Electrical and chemical signals pass from one neuron to another.
• Signal reaches to the spinal cord
• The spinal cord transmits signals to the olfactory bulb of the forebrain
• The brain processes the information based on stimulus and already available information to detect the smell .
• Thus, we know the presence of stimuli and characteristics.