Embryology Flashcards
What does each pharyngeal arch consist of?
Mesenchyme tissue
Neural cell crest
Cranial nerve
Artery
What are the numbers of pharyngeal arches in humans?
1 2 3 4 6
Which cranial nerve is the first pharyngeal arch associated with?
Trigeminal nerve (maxillary and mandibular)
Which cranial nerve is the second pharyngeal arch associated with?
Facial nerve
The glossopharyngeal nerve is associated with which pharyngeal arch?
3
Which cranial nerve is associated with the 4th and 6th pharyngeal arches?
Vagus (arch 4 = superior laryngeal and arch 6 = recurrent laryngeal)
What are the skeletal components of the first pharyngeal arch?
Maxillary and mandibular processes
Which group of muscles are associated with the first pharyngeal arch?
Muscles of mastication
Which bone of the middle ear is associated with the second pharyngeal arch?
Stapes
Which group of muscles are associated with the second pharyngeal arch?
Muscles of facial expression
The fourth and sixth arches mainly contribute to what structure?
Larynx
Of the four pharyngeal clefts, which is retained to form the external auditory meatus?
1
The 1st pharyngeal cleft lines up with the 1st pharyngeal pouch to form what?
Tympanic membrane
Otic placodes give rise to what which give rise to the inner ear?
Otic vesicles
