22.The neural plate forms directly from which of the following?
a. Ectoderm
b. Endoderm
c. Somatopleuric mesoderm
d. Splanchnopleuric mesoderm
e. Hypoblast
23.Which of the following forms from paraxial mesoderm?
a. Adrenal cortex
b. Adrenal medulla
c. Humerus
d. Biceps brachii
e. Masseter
24.The cerebral cortex forms from which of the following?
a. Telencephalon
b. Myelencephalon
c. Metencephalon
d. Mesencephalon
e. Diencephalon
25.The primordial germ cells that eventually form the oogonia and sper-
matogonia originate in which of the following?
a. Dorsal mesentery of the hindgut
b. Gonadal ridge
c. Endodermal lining of the yolk sac
d. Primary sex cords of the developing gonad
e. Chorion
78 Anatomy, Histology, and Cell Biology