Chemical Sensory System Flashcards
Define a chemoreceptor.
Receptors that are sensitive to specific chemicals.
What do chemoreceptors detect primarily? (2 things) Give an example of each.
1) Chemical changes in the internal environment.
e. g. Receptors that sense oxygen and hydrogen ions conc. in the blood.
2) External chemical substances:
e. g. Taste and smell, which affect a person’s appetite, saliva flow, gastric secretions, and avoidance of harmful substances.
What are taste buds?
Specialized sense organs for gustation.
Approximately how many taste buds are present in the mouth and throat? Where are the majority located?
~10,000
Define _______ and their structure.
Arranged like orange slices around a hollow taste pore.