Knowra Chemoreception Chemoreception Chemoreception is the detection of chemical stimuli by specialized sensory cells. It enables organisms to sense substances in their surroundings or internal fluids.
Chemoreceptor : A sensory cell or molecule that detects particular chemical stimuli and initiates a response. Chemoreceptors are the detectors at the center of chemoreception.
Olfaction : The sense of smell, produced by detecting airborne or dissolved volatile chemicals. Olfaction detects chemicals that reach receptors in the nasal cavity.
Blood gas analysis : Measurement of oxygen, carbon dioxide, and acidity in blood, commonly used to assess respiratory function. It evaluates the variables sensed by chemoreceptors that regulate breathing.
Mechanoreception : The detection of physical forces such as pressure, vibration, or stretch by sensory structures. Unlike chemoreception, it detects mechanical forces rather than molecular identity.
Olfactory coding : The neural representation of odor identity and intensity through patterns of activity in olfactory pathways. Researchers still investigate how receptor responses combine into recognizable odors.
G protein-coupled receptor : A cell-surface receptor that activates intracellular signaling through heterotrimeric G proteins. Many odorant and taste receptors use this signaling architecture.
Gustation : The sense of taste, produced by detecting chemicals dissolved in saliva. Gustation detects food-related chemicals through receptors in taste buds.
Ventilatory control : The physiological regulation of breathing rate and depth to maintain gas exchange and blood pH. Chemoreceptors adjust ventilation in response to carbon dioxide, oxygen, and acidity.
Photoreception : The detection of light by specialized sensory cells or molecules. Photoreception responds to photons, not chemical stimuli.
Human pheromone : A proposed chemical signal that alters behavior or physiology in other humans of the same species. Whether humans use pheromones in the strict biological sense remains unresolved.
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