histology embryology review chap 3 4 5

division of a cell into two daughter cells occurs during which phase of mitosis

prophase
anaphase
metaphase
telephase

each of the following is a period of prenatal development EXCEPT  one which one is the EXCEPTION

fetal
ovulation
embryonic
preimplantation

down syndrome is a developmental distrubance that occurs during which period of prenatal development

fetal
embryonic
preimplantation

which period of prenatal development occurs during months 3 to 9

fetal
embyroinc
preimplantation
a only
both a and b

match each germ layer listed to the stucture it forms in the developing embryo

endoderm
mesoderm
ectoderm

the earliest indication of a part or an organ during prenatal development is referred to as the

primordium
stomodeum
zygote
nuculeus

during facial development the two structures forming the major facial structures are the frontonasal proces and the pharyngeal (branchial)arch 1.  this process begins during week 6 in utero

true statements or false

from the following list select the structures of the embryo that begin development in week 4 of the prenatal development

face
neck
palate
tongue
placenta

the first branchial arch is also called the mandibular arch.  the cartilage forming within the mandibular arch is known as reichert cartlidge

true of false statements

the face and its related tissues begin to form during week 6 of prenatal development within the fetal period. facial development is completed by week 12

true of false statements

for each of the developing branchial arches listed select the most appropriate anatomic structure that it gives rise to

mandibular arch (branchial arch 1)
hyoid arch (branchial arch II)
branchial arch III
branchial arch IV