| Term: | extraocular musculature neuromuscular junction |
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| Note: | This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name. |
| Name: | extraocular musculature |
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| Synonyms: | ocular musculature |
| Definition: | Muscle system surrounding the eye. The extraocular musculature is derived from the neural crest. The extraocular muscles assume their adult configuration between 66 and 72 hpf. They differentiate contemporaneously with the eye vesicle, form precise anatomic attachments to sclera and bone, and are innervated by cranial nerves 3, 4, and 6. |
| Ontology: | Anatomy Ontology [ZFA:0000511] |
| Name: | neuromuscular junction |
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| Synonyms: | motor endplate, NMJ |
| Definition: | The junction between the axon of a motor neuron and a muscle fiber. In response to the arrival of action potentials, the presynaptic button releases molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane of the muscle fiber, leading to a change in post-synaptic potential. |
| Ontology: | GO: Cellular Component [GO:0031594] QuickGO AmiGO |