RSL - Repro - Aortic arch / branchial arch Flashcards
Aortic Arch Derivatives: 1st
Maxillary artery (1=max)
Aortic Arch Derivatives: 2nd
Stapedial artery and hyoid artery (2 = S)
Aortic Arch Derivatives: 3rd
Common carotid artery and proximal part of internal corototid artery (C is third letter)
Aortic Arch Derivatives: 4th
Left: Aortic arch Right: proximal part of right subclavian (4 = 4 limbs)
Aortic Arch Derivatives: 6th
Proximal part of pulmonary arteries Left: ductus arteriosus
Origin / location: Branchial cleft
Ectoderm (outside)
Origin / location: branchial arch
Medoserm (middle)
Origin / location: Branchial pouch
Endoderm (inner)
Branchial cleft derivatives: 1st
External auditory meatus
Branchial cleft derivatives: 2nd
temporary cervical sinus, obliterated by 2nd arch mesochyme
Branchial cleft derivatives: 3rd
temporary cervical sinus, obliterated by 2nd arch mesochyme
Branchial cleft derivatives: 4th
temporary cervical sinus, obliterated by 2nd arch mesochyme
Branchial Arch Derivatives:1st: (muscles)
Muscles of mastication, anterior belly of the digastric, mylohyoid, tensor tympani, tensor veli palatini
Branchial Arch Derivatives:2nd: (muscles)
Muscles of facial expression, buccinator, platysma, stapedius, stylohyoid, posterior belly of the digastric, auricular[10]
Branchial Arch Derivatives:3rd: (muscles)
Stylopharyngeus
Branchial Arch Derivatives:4th: (muscles)
Cricothyroid muscle, all intrinsic muscles of soft palate (including levator veli palatini) except tensor veli palatini
Branchial Arch Derivatives:6th: (muscles)
All intrinsic muscles of larynx except the cricothyroid muscle
Branchial Arch Derivatives:1st: Skeletal contributions
Premaxilla, maxilla, mandible (only as a model for mandible not actual formation of mandible), zygomatic bone, part of the temporal bone, the incus, and the malleus of the middle ear, also Meckel’s cartilage and the sphenomandibular ligament.
Branchial Arch Derivatives:2nd: Skeletal contributions
Stapes, temporal styloid process, hyoid (lesser horn and upper part of body), stylohyoid ligament, Reichert’s cartilage
Branchial Arch Derivatives:3rd: Skeletal contributions
Hyoid (greater horn and lower part of body), thymus, inferior parathyroids
Branchial Arch Derivatives:4th: Skeletal contributions
Thyroid cartilage, superior parathyroids, epiglottic cartilage
Branchial Arch Derivatives:6th: Skeletal contributions
Cricoid cartilage, arytenoid cartilages, corniculate cartilage, cuneiform cartilages
Branchial Arch Derivatives:1st: Nerve
Trigeminal nerve (part of V2 and V3)
Branchial Arch Derivatives:2nd: Nerve
Facial nerve (VII)
Branchial Arch Derivatives:3rd: Nerve
Glossopharyngeal nerve (IX)
Branchial Arch Derivatives:4th: Nerve
Vagus nerve (X), superior laryngeal nerve
Branchial Arch Derivatives:6th: Nerve
Vagus nerve (X), recurrent laryngeal nerve
Branchial Puch derivatives: 1st:
Middle ear cavity, eustachian tube, mastoid air cells
Branchial Puch derivatives: 2nd
Epithelial lining of palatine tonisls
Branchial Puch derivatives: 3rd
Dorsal wings: Inferior parathyroids
Ventral wings: Thymus
Branchial Pouch derivatives: 4th
Dorsal wings: Superior parathyroids
Cleft lip
Failure of maxillary and medial nasal prominance fusion
Cleft palate
- Failure of two lateral palatine processes
- failure of lateral palatine process with nasal septum or medial palatine process
