VM craniofacial development Flashcards by Jessica Lomas

Q

what process is this?

A

mandibular process

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Q

what process is this?

A

maxillary process

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Q

A

developing tooth -> dental lamina and tooth germ

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Q

A

meckel’s cartilage

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Q

A

tongue

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Q

A

palatal shelves

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Q

A

maxillary nerve trunk

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Q

what is this and its function?

A

nasal capsule

primitive support

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Q

A

dental lamina

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Q

what is this structure?

A

nerve trunk

no nuclei in axons as they are in cell bodies that are miles away in the trigeminal ganglion, nuclei we do see are supporting cells

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Q

what structures are derived from meckel’s cartilage?

A

Malleus, mandible, sphenomandibular ligament and sphenomalleolar ligament

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Q

what structures are derived from the nasal capsule?

A

Midline nasal septum and ethmoid bones

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Q

predict what age the embryo is, why?

A

Week 7 as palatal shelves down lateral tongue and tongue takes up most of the space
Week 6 is when see the first evidence of tooth development

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Q

compare the histology of the different structures

A

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Q

A

palatal shelves

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Q

A

tongue

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Q

Study These Flashcards

A

meckel’s cartilage

Q

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A

early tooth development

Q

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A

maxillary nerve trunk

Q

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A

nasal capsule

Q

what is the line pointing at?

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A

bone formation

Q

what age is this specimen? why?

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A

Week 8, palatal shelves elevated but not fused yet

Q

which forms first maxilla or mandible?

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A

mandible

Q

mandibular process

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A

meckel’s cartilage

mandibular process

developing mandible

what is this structure at the base of the nasal capsule?

developing vomer dark cells are osteoblasts making bone

note this

what is this?

Nasal capsule is made up of cartilage -> nasal septum is part of it

what is this in the maxillary process?

maxillary nerve trunk

tooth germ

maxillary nerve trunk

palatal shelves

tooth germ

meckel's cartilage

developing mandible

inferior alveolar nerve

this will be the sulcus

look at this inferior alveolar nerve next to the developing mandible

what are these?

Remnants of nasal capsule

Condensed ectomesenchymal cells that will make dentine and pulp

Epithelial cells that will form ameloblasts and make enamel