ommatidium [FBbt_00004510]

One of the facets of the compound eye. It is composed of eight light-sensing photoreceptor cells (photoreceptor cell R1-R8) and accessory cells. There are around 800 ommatidia in each compound eye.

ommatidium

ID: FBbt_00004510

Adult Nervous system Sense organ Visual system

One of the facets of the compound eye. It is composed of eight light-sensing photoreceptor cells (photoreceptor cell R1-R8) and accessory cells. There are around 800 ommatidia in each compound eye.

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## Classification

Relationships

capable of: detection of light stimulus involved in visual perception
develops from: ommatidial precursor cluster
is part of: retina

Neurons with some part in ommatidium (18 total)

Thumbnail	Name	Tags
	R5	Adult, Histaminergic, Nervous_system, Sensory_neuron, Visual_system
	pR7	Adult, Histaminergic, Nervous_system, Sensory_neuron, Visual_system
	pR8	Adult, Cholinergic, Histaminergic, Nervous_system, Sensory_neuron, Visual_system
	yR7	Adult, Histaminergic, Nervous_system, Sensory_neuron, Visual_system
	yR8	Adult, Cholinergic, Histaminergic, Nervous_system, Sensory_neuron, Visual_system

View all 18 results in VFB →

Parts of ommatidium (59 total)

Thumbnail	Name	Tags
	R1	Adult, Histaminergic, Nervous_system, Sensory_neuron, Visual_system
	R2	Adult, Histaminergic, Nervous_system, Sensory_neuron, Visual_system
	R3	Adult, Histaminergic, Nervous_system, Sensory_neuron, Visual_system
	R4	Adult, Histaminergic, Nervous_system, Sensory_neuron, Visual_system
	R8-DRA	Adult, Cholinergic, Histaminergic, Nervous_system, Sensory_neuron, Visual_system

View all 59 results in VFB →

Subclasses of ommatidium (3 total)

Thumbnail	Name	Tags
	dorsal margin ommatidium	Adult, Nervous_system, Sense_organ, Visual_system
	pale ommatidium	Adult, Nervous_system, Sense_organ, Visual_system
	yellow ommatidium	Adult, Nervous_system, Sense_organ, Visual_system