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12 Cards in this Set

  • Front
  • Back
Origin of core mesoderm
From invading neural crest cells (skeletal structures) and paraaxial mesoderm (muscular structures, endothelium of blood vessels)
1st arch
Most rostral arch (called mandibular arch, made up of maxillary and mandibular processes)
Make up of pharyngeal apparatus
pharyngeal arch
pharyngeal pouch
pharyngeal membrane
pharyngeal groove
First Arch
Skeletal
Muscles
Nerve
BV
Skeletal
- Meckel's cartilage (regresses)
-forms incus and malleus
-part of sphenomandibular ligament

Muscles
- Muscles of mastication
-Tensor Tympani
-Tensor Veli palatine
-Mylohyoid
-Anterior belly digastric

Nerve
-CN V3 (mandibular)

BV
-Maxillary Artery
Second Arch
Skeletal
Muscles
Nerve
BV
Skeletal
-Reichert's cartilage (regresses)
-styloid process
-stapes
stylohyoid ligament
-superior portion of hyoid bone

Muscles
-Facial expression
-Posterior belly digastric
-stylohyoid muscle
-Stepedius

Nerve
-Facial Nerve
CN VIII

BV
-Stapedial Artery
Third arch
Skeletal
Muscles
Nerve
BV
Skeletal
-Inferior portion of Hyoid bone
-Small laryngeal cartilages

Muscles
-Stylopharyngeus muscle

Nerve
-Glossopharyngeal nerve CN IX

BV
-Contribution to internal carotid artery
Fourth and Sixth arches
Skeletal
Muscles
Nerve
BV
Skeletal
-Laryngeal cartilages

Muscles
-Muscles of intrinsic larynx
-Muscles of soft palate and pharynx

Nerve
-Vagus nerve CNX

BV
Left side aortic arch
right side subclavian artery
First pouch derivatives
Elongates dramatically
Forms portion of tympanic cavity in middle ear
Auditory tube (nasal-pharyngeal tube) and inferior aspect of tympanic membrane
Second pouch derivatives
remains shallow pit
Forms tonsillar fossa (not tonsils)
eventually invaaded by lymphatic tissue (forming palatine tonsil)
Third pouch derivatives
Dorsal bud- forms inferior parathyroid glands
Ventral bud - forms thymus
Fourth pouch derivatives
Dorsal bud- forms superior parathyroids
Ventral bud- forms ultimobranchial body which invates thyroid to form parafollicular cells
Fifth pouch derivatives
Rudimentary, combines with 4th arch