III. Vertebral Column/Spinal Column - Basic Embryology of the Vertebral Column. (Pg. 10)

Question 1

When does the embryonic disc form?

Answer 1

second week in utero

Question 2

When does gastrulation occur or a 3-layered embryo form?

Answer 2

third week in utero

Question 3

What are the 3 layers of the embryo called?

Answer 3

ectoderm, mesoderm, endoderm

Question 4

Invagination of ectoderm along the primitive streak gives rise to what embryonic structure?

Answer 4

notochord

Question 5

What is the name given to the mesoderm that will give rise to the vertebral column?

Answer 5

paraxial mesoderm