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21 Cards in this Set

  • Front
  • Back
What is derived from the first branchial arch?
Maxilla
Teeth
Secondary palate
Mandible
Middle ear bones (maleus, incus)
What is derived from the first branchial pouch?
Groove?
All ear stuff
Eustachain tube (pouch)
Tympanic membrane (pouch + groove)
External auditory meatus (groove)
What is from the second branchial arch?
Stapes (inner ear), superior hyoid
What is derived from the second branchial pouch?
Tonsils
What is derived from the 2nd B groove?
Nothing!
What is derived from the 3rd B arch?
part of hyoid
What is from the 3rd B pouch?
Inferior parathyroids
Thymus
What is derived from B arches 4 and 6?
Laryngeal cartilages
What is derived from the 4th branchial pouch?
Superior parathyroid
What is derived from the ventral midline endoderm at the level of the 1st B arch?
Lining of tongue
What innervates B arch 1?
What is blood supply?
Trigeminal Nerve (V)
First aortic arch (degenerates)
What innervates B arch 2?
Blood supply?
Facial nerve (VII)
Second aortic arch (degenerates)
What innervates B arch 3?
Blood supply?
Glossopharyngeal nerve (IX)
Aortic arch becomes common carotid arteries
What innervates B arches 4 and 6?
Blood supply?
Vagus nerve (X)
No specific blood supply
From what is the muscle of the tongue derived?
Paraxial mesoderm of the head
From what does the dermis of the head derive?
Neural crest cells
What forms the optic cup?
Diencephalon
What induces the lens placode (of the eye) to form?
Contact of the surface ectoderm with the dienchphalon
What three tissue types form the eye?
Ectoderm (lens and cornea)
Neural epithelium (neural retina, pigmented retina)
Neural crest (cornea, iris, sclera, chroid)
Describe pituitary development
Hypophyseal placode (from oral ectoderm)
Rathke's pouch
Induction of infundibulum from ventral midline diencephalon
Pinching off of the ectoderm to fuse A to P
Parts and origin of the teeth
Enamel organ (oral ectoderm)
Dental papilla (neural crest); pulp and dentin