Establishment of the Basic Embryonic Body Plan

What type of folding marks a change in embryo shape?

• Ventral folding

• Lateral folding

• Craniocaudal folding

• Cephalocaudal folding

What is the proper order of the stages of neurulation?

• Neural plate formation, convergent extension, lateral folding, apposition, fusion, and separation

• Apposition, fusion, and separation, neural plate formation, convergent expansion, and lateral folding

• Neural plate formation, lateral folding, convergent extension, apposition, fusion, and separation

• Lateral folding, convergent expansion, neural plate formation

T/F: Soon after the neural tube has taken shape, the region of the future brain can be distinguished from the spinal chord.

• True

• False

Tags

NGSS.HS-LS1-2

NGSS.HS-LS1-4

Which signaling gradient calls for separation into forebrain/midbrain and hindbrain/spinal chord?

• Gbx-2

• Shh

• Wnt-8

• Fgf

How many rhombomeres do humans have?

• 0

• 7

• 6

• 15

T/F: Placodes will create your fingernails

• True

• False

What does the neural border give rise to?

• The neural crest and preplacodal region

• Hindbrain

• Placodes

• Spinal chord

When does neural border subdivision occur?

• Neurulation

• Metamorphosis

• Gastrulation

BONUS: What do you think my cat is named?

• Oreo

• Socks

• Pavlov

• Rutabaga