Topographic "maps" of the sensory receptor surface along the pathway from periphery to cortex

Labelled lines from sensory periphery to cortex

Receptive fields that define the region of a receptor surface activating a neuron

The use of diffuse modulatory systems defined by different neurotransmitters

The use of relay nuclei in relaying information from receptor surface to cortex

They are also GPCRs

They also activate Transducin

They also break down cGMP

They allow influx of Na+

They also breakdown cAMP

To keep the air flow turbulent

To hold the cilia together

To capture the air molecules

To wash the nose clean for fresh smells

To amplify the smell sensation

sodium ions

chloride ions

hydrogen ions

receptors at the sides of the tongue

cAMP and potassium ions

Two types are sensitive to different sensations, and one type responds broadly to all tastes

Two types respond broadly to all tastes, and one type is sensitive to different sensations

All types respond broadly to all tastes

All types are sensitive to different sensations

Vary in their sensitivity depending on where they are lcoated on the tongue

Bipolar neurons with a cilia containg the receptor proteins

Specialized receptor cells with a cilia containg the receptor proteins

Specialized receptor cells with microvilli that have ion channels

Specialized endings of nerve fibres with microvilli that have ion channels

Specialized supporting cells with microvilli that have ion channels

They both involve direct effects via ion channels

They both involve indirect effects via GPCRs

They both involve indirect effects via different GPCRs acting on the same type of G protein 

They both involve indirect effects via the same GPCR acting on different types of G proteins

They both involve indirect effects on the same type of ion channels via different GPCRs acting on different types of G proteins