Question
Which of the following happens last? A Smell receptors send signals to the brain. B Odour molecules stimulate smell receptors The brain recognises a familiar smell. D Odour molecules travel through the nose
Answer
3.5
(216 Votes)
Barclay
Professional · Tutor for 6 years
Answer
C
Explanation
The question is about the process of smell sensation. Understanding this sequence can be useful in Neuron/sensory science in Biology. Anatomy and Sensory processes involved in the sense of smell work in the following order: initially, odour molecules travel through the nose and stimulate the smell receptors. After stimulation, the receptors transmit these signals to the brain. Lastly, with prior knowledge and signals received, the brain recognises a familiar smell. Therefore, the brain's recognition of a familiar scent happens last.