The apical ectodermal ridge
A. plays a role in differentiation and elongation of the limb.
B. ossifies prior to formation of the hand and foot plates.
C. forms at the proximal end of each limb bud.
D. secretes mesoderm for muscle formation.
E. must undergo apoptosis before the limb can develop.
Answer: A
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A) peritoneal B) pleural C) orbital D) dorsal E) pericardial
Answer the following statements true (T) or false (F)
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Paranasal sinuses are found in which of these facial bones?
A) zygomatic bones B) vomer C) nasal conchae D) maxillae
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What will be an ideal response?