rhomboid fossa

Orientation of the rhomboid fossa

Greater axis is vertical

What forms the rhomboid fossa?

Two triangles: inferior (medullary) and superior (pontine)

What separates the two triangles of the rhomboid fossa?

Stria medullaris

What structure divides the rhomboid fossa into two halves?

Median sulcus ( on midline )

What flanks the median sulcus?

Medial eminences

Lateral boundary of the medial eminence

Sulcus limitans

Sulcus limitans is bordered by what?

Superior and inferior foveae

What forms the inferior (medullary) triangle?

Two triangular areas

Name the two areas of the hypoglossal triangle

Medial and lateral regions

What divides the hypoglossal triangle?

Vertical funiculus

Deep structure in the medial hypoglossal region

Hypoglossal nucleus

Lateral part of hypoglossal triangle corresponds to what?

Pulviformis area (nucleus intercalatus of Staderini)

Orientation of the vagus triangle

Tip is superior

→ splitted by an oblique crest ( funiculum separans )

→ into 2 region :

Superomedial region of vagus triangle contains what?

Dorsal nucleus of vagus nerve

Inferior region of vagus triangle corresponds to what?

Area postrema

Location of vestibular area

Lateral angle of medullary triangle → contains vestibular nuclei.

Superior feature of vestibular area

Acoustic tubercle (dorsal cochlear nucleus)

Order of structures in pontine triangle (lateral → medial)

Facial colliculus → superior fovea → locus coeruleus

Facial colliculus corresponds to what?

CN VI nucleus and internal genu of CN VII

Superior fovea corresponds to what?

Motor nucleus of CN V

Locus coeruleus corresponds to what?

Nucleus coeruleus