When considering the sense of smell, what statement is most accurate?
◦ Our sense of smell is more sensitive than a dog's sense of smell only because we are larger than dogs.
◦ While we only have 5 million scent receptors, we can still sense over one trillion odors.
◦ Our sense of smell is dependent on the optic nerve to carry the signals to the brain.
◦ While we have a fairly keen sense of smell, beyond pleasure, it really has no adaptive function.