Pharyngeal Arch/Pouch Flashcards
Buccinator
Pharyngeal arch 2
Stylohyoid
Pharyngeal arch 2
Facial nerve CN VII
Pharyngeal arch 2
Intrinsic laryngeal
Pharyngeal arch 6
Maxillary A.
Pharyngeal arch 1
Model of mandible
Pharyngeal arch 1
Mastication muscles
Pharyngeal arch 1
Epiglottis (name the 2)
Pharyngeal arch 3 and 4
External Carotid A
Pharyngeal arch 1
Each pharyngeal arch contains a cartilaginous rod to form
skeletal structures
Right recurrent laryngeal nerve hooks around
Right subclavian
Facial muscles
Pharyngeal arch 2
Striated esophageal
Pharyngeal arch 6
Tensor tympani
Pharyngeal arch 1
Malleus
Pharyngeal arch 1
Levator veli palatini
Pharyngeal arch 4
X vagus and superior laryngeal n.
Pharyngeal arch 4
Incus
Pharyngeal arch 1
Pharyngeal constrictors
Pharyngeal arch 4
Which arch is the hyoid arch?
Pharyngeal arch 2
Cricoid thyroid
Pharyngeal arch 4
Each pharyngeal arch contains a muscular component from:
Somites
Tensor veil palatini
Pharyngeal arch 1
Each pharyngeal arch contains sensory/motor nerves from
Neuroectoderm
Anterior digastric m.
Pharyngeal arch 1
Stapedial artery
Pharyngeal arch 2
Posterior digastric
Pharyngeal arch 2
Stapedius
Pharyngeal arch 2
Arch of aorta and Right subclavian
Pharyngeal arch 4
Why does the recurrent laryngeal nerve have an asymmetry?
Because the degeneration of arch 5 and the distal part of arch 6 on the right (when the artery degenerates dismally) causes a difference in the curve of the nerve.
Mylohyoid m
Pharyngeal arch 1
What structures in the pharyngeal arch/pouches may not be derived from NCC?
— Muscle primordium (because NCC makes smooth muscle)
— Endothelial cells (because they’re derived from lateral mesoderm)
— Possibly nerves (because they are derived from neuroectoderm)
Left Pulmonary A and R pulmonary A and Ductus Arteriosus
Pharyngeal arch 6
Which arch is the mandibular arch?
Pharyngeal arch 1
Stylopharyngeus
Pharyngeal arch 3
CN X (vagus) and recurrent laryngeal
Pharyngeal arch 6
Zygomatic process of temporal bone
Pharyngeal arch 1
CN IX (glossopharyngeal)
Pharyngeal arch 3
All laryngeal cartilages
Pharyngeal arch 4 (with 6, but 6 does not contribute to cricoid thyroid)
V2 and V3 of CN V
Pharyngeal arch 1
Each pharyngeal arch contains pharyngeal arch artery from
truncus arteriosus
Maxillary
Pharyngeal arch 1
Lesser cornea and superior body of hyoid
Pharyngeal arch 2
Common carotid a. and internal carotid a.
Pharyngeal arch 3
Left recurrent laryngeal nerve hooks around:
Ductus arteriosus (adult ligamentum arteriosum) 6th aortic arch
Greater Cornu and inferior body of hyoid
Pharyngeal arch 3
Reichert’s cartilage
Pharyngeal arch 2
Styloid process of temporal
Pharyngeal arch 2
What structures are derived from neural crest in the pharyngeal arches/pouches?
— Mesenchyme (derived from neural crest cells, NCC)
— Maxillary and mandibular prominences
— All CT, dermis and smooth muscle
— Pharyngeal arch cartilages
