Netter's MCQs Chapter 1: Development of the Head & Neck Flashcards
The pharyngeal arches start forming during which week of development?
a: 1st
b: 2nd
c: 3rd
d: 4th
d: 4th
Pharyngeal pouches arise from which germ layer?
a: ectoderm
b: endoderm
c: paraxial mesoderm
d: intermediate mesoderm
b: endoderm
Muscular structures develop from which germ layer?
a: endoderm
b: mesoderm
c: neural crest
d: neuroectoderm
b: mesoderm
The trigeminal nerve (V) innervates which pharyngeal arch?
a: 1
b: 2
c: 3
d: 4
a: 1
Which pharyngeal arch regresses after initial development?
a: 1
b: 2
c: 4
d: 5
d: 5
The internal lining of the pharyngeal membrane is composed of:
a: endoderm
b: mesoderm
c: neural crest cells
d: ectomesenchyme
a: endoderm
The 2nd pharyngeal pouch forms which structure? a: tonsillar fossa b: superior parathyroid gland c : epithelium of auditory tube d: epithelium of tympanic cavity
a: tonsillar fossa
Which structure is not ossified?
a: incus
b: malleus
c: inferior nasal concha
d: sphenomandibular ligament
d: sphenomandibular ligament
Which structure does not originate from the 2nd pharyngeal arch?
a: stapes
b: maxilla
c: styloid process
d: stylohyoid ligament
b: maxilla
The earliest the posterior fontanelle might close is at which time?
a: 1 month
b: 3 months
c: 4 months
d: 12 months
a: 1 month
Which structure is formed by the membranous neurocranium?
a: ethmoid
b: frontal bone
c: petrous portion of temporal bone
d: sphenoid
b: frontal bone
The secondary palate is formed by protrusions from which prominence?
a: maxillary
b: mandibular
c: medial nasal
d: lateral nasal
a: maxillary
The formation of the definitive palate involves all but which structures?
a: nasal septum
b: primary palate
c: secondary palate
d: mandibular prominence
d: mandibular prominence
Which pharyngeal arch forms the anterior 2/3 of the tongue?
a: 1
b: 2
c: 4
d: 5
a: 1
