7.3 The Chemical Senses

Question 1

Labeled-line principle

Answer 1

Consept that each reseptor responds to a limited range of stimuli and has a direct line to the brain

Question 2

Across-fiber principle

Answer 2

Ideas that each receptor responds to a wide range of stimuli and contributes to the perception of every stimulus in its system

Question 3

Adaptation

Answer 3

Decreased response to a stimulus as a result of recent exposure to it

Question 4

Nucleus of the tractus solitarius (NTS)

Answer 4

Structure in the medulla that receives input from taste receptors

Question 5

Supertasters

Answer 5

People with heightened sensetivity to all tastes and mouth sensations

Question 6

Cross-adaptation

Answer 6

Reduced response to one taste after exposure to another

Question 7

Olfaction

Answer 7

The sense of smell, which is the response to chemicals that contact the membranes inside the nose

Question 8

Vomeronasal organ (VNO)

Answer 8

A sett of reseptors, located near, but separate from, the olfactory receptors

Question 9

Olfactory cell

Answer 9

Neurons responsible for smell, located on the olfactory epithelium in the rear of the nasal air passages

Question 11

Synesthesia

Answer 11

The experience some people have in which stimulation of one sense evokes a perseption of that sense and another one also

Question 12

Pheromones

Answer 12

Chemicals released by an animal that affect the behavior of other members of the same species