metotic fissure

An embryonic fissure between the otic capsule and the arches which develop into the occipital bones. The fissure may persist into adulthood. It is also referred to as the 'lateral otic fissure' The metotic fissure opens into the vestibular fontanelle, if the fontanelle is present. (Johanson et al. (2003)). Otherwise it opens to the metotic foramen.

Type Bone
Parent Structure surface groove

Frequently Asked Questions

What is the metotic fissure?
An embryonic fissure between the otic capsule and the arches which develop into the occipital bones. The fissure may persist into adulthood. It is also referred to as the 'lateral otic fissure' The metotic fissure opens into the vestibular fontanelle, if the fontanelle is present. (Johanson et al. (

Related Structures

1st arch mandibular component ventral mandibular arch 1st arch mandibular ectoderm ectoderm of mandibular component 1st arch mandibular mesenchyme mandibular component mesenchyme 1st arch mandibular mesenchyme from head mesenchyme 1st arch mandibular mesenchyme from neural crest 1st arch maxillary component 1st arch maxillary ectoderm ectoderm of maxillary component 1st arch maxillary-mandibular cleft 1st arch maxillary-mandibular groove ectoderm

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