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Lab 3: Insect Chemoreception
Terms in this set (18)
What are the terms for internal and external receptors?
interoceptors and exteroceptors
What are the two opposing function of the sensory system?
1) the sensory system must filter out unimportant stimuli
2) must be sensitive to relevant stimuli
What is the name of the process that can detect specific environmental changes and produce action potentials in a sensory neuron?
How are gaseous chemicals detected?
What types of animals usually have olfactory receptors?
Which can be detected easily at low concentrations: solid, liquid, or gaseous chemicals?
Which can be detected easily at high concentrations: solid, liquid, or gaseous chemicals?
solid and liquid
How is taste perceived in both aquatic and terrestrial animals?
chemicals either solid or liquid directly contact gustatory receptors.
What are the 2 big difference in detection of the olfactory receptors versus detection in the gustatory receptors.
1) olfactory receptors are sensitive at low concentrations versus gustatory which are sensitive at high concentrations
2) gustatory= detection directly with solid or liquids
olfactory= detection remotely with gases
Where can you find insect taste receptors?
The mouth, antennae, tarsi (legs), and genitalia (especially near the tip of the female's ovipositor).
Where are insect olfactory receptors most concentrated and why?
The antennae because is acts as a distance chemoreceptor
Other than the antennae, where else might you find insect olfactory receptors?
mouthparts/ external genitalia
Insects, like all arthropods, are covered with a chitin-protein complex called the _________?
What does the cuticle of an insect do/ why is it the cuticle covered in additional waxes?
prevents desiccation drying out.
What is common among all cuticular structures?
all have a modified cuticular region that provides on or more pores through which chemicals can gain entrance
What term describes a cuticular structure plus the associated chemoreceptor cells?
In gustatory sensilla, do chemicals enter via a single pore or many pores?
a single pore
In olfactory sensilla, do chemicals enter via a single pore or many pores?
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