the maxillary process of the early embryo gives rise to all of these EXCEPT
sides of upper lip
secondary palate
cheeks
alae of the nose
alae of the nose
the best definition of a Placode is
thickened ectoderm that will develop into sensory organs
in the development of the oral cavity the embryonic origin of area A in figure 1 is the
frontonasal process
the most common defects of ororfacial development are, unilateal and bilateral cleft lips. The facial abnormalities are the failure of which facial processes to fuse with the maxillary processes
maxillary process and medial nasal process
Meckels cartilage participates in the formation of all of the following EXCEPT
eardrum
incus
malleus
mandible
eardrum
which of the following phrases concerning the second branchial arch is CORRECT
it is called the mandibular arch
it contains Reicherts cartlidge
it forms into the muscles of mastication
it is associated with the trigeminal nerve
it contains reicherts cartilidge
Recherts cartilage contributes to the formation of NONE of the following EXCEPT
eardrum
malleus
lower portion of the hyoid bone
upper portion of the hyoid bone
upper portion of the hyoid bone
the six branchial arches, groove, and the three pharyngeal pouches are the embryonic precursors to which of the following structures of the human adult, ear, neck, thyroid, and trachea
the branchial arches are six pairs of stacked bilateral swellings of tissue that appear inferior to the stomodeum. The branchial arches include the maxiallry arch
true of false statements
the first statement is true the second is false
all three embryonic layers are involved in facial development
true of false
true
the mandibular arch during the embryonic period is the
fusion of the two mandibular processes
swelling found superior to the stomodeum
stucture that gives rise to the lateral nasal proceses
posterior portion of the hard palate
fusion of the two mandibular processes
the overall growth of the face is in a superior and posterior direction in relationship to the cranial base
true of false
false
the overall growth of the face is in an inferior and anterior direction in realtionshop to the cranial base
the paired maxillary processes fuse at the midline to form the mandibular arch
true of false
false
paired mandibular processes then fuse at the midline to form the mandibular arch.
the placodes are rounded areas of specialized, thickened ectoderm found at the location of developing special sense organs
true of false
true
the stomodeum initially appears as a shallow depression in the embyronic surface ectoderm at the cephalic end
true of false
true
which of the following structures is initially formed during the fifth week of prenatal development