Question 1

Somites develop from ___ as the neural tube closes.

Accepted Answer

mesoderm

Question 2

During Phase II, the processes of Neural Tube Differentiation, Spinal Cord Formation, and ___ Formation take place.

Accepted Answer

Brain

Question 3

The ___ stage of development occurs from conception to Day 14.

Accepted Answer

Pre-Embryonic

Question 4

The first germ layer formed is called the ___.

Accepted Answer

Endoderm

Question 5

Phase II spans from Day 27 to the end of week ___.

Accepted Answer

8

Question 6

The ___ stage of development lasts from Day 15 to the end of the 8th week.

Accepted Answer

Embryonic

Question 7

Clusters of cells form ___ on each side of the neural tube.

Accepted Answer

bulges

Question 8

The ___ forms as a solid sphere of cells.

Accepted Answer

blastocyst

Question 9

The ___ is the rostral opening in the neural tube.

Accepted Answer

Superior neuropore

Question 10

The period from the end of the 8th week to birth is known as the ___ stage.

Accepted Answer

Fetal

Question 11

The ___ is a non-neural tissue that induces tissue to become the neural plate.

Accepted Answer

Notochord

Question 12

The second germ layer formed is known as the ___.

Accepted Answer

Mesoderm

Question 13

After fertilization, ___ occurs in the uterine tube.

Accepted Answer

cell division

Question 14

The blastocyst undergoes ___ by implanting in the lining of the uterus.

Accepted Answer

implantation

Question 15

During Phase I, which structure begins to form on Day 18 to 26? ___

Accepted Answer

Notochord

Question 16

The posteromedial somite, known as the ___, develops into skeletal muscle.

Accepted Answer

myotome

Question 17

The inner layer of the neural tube becomes ___ matter, which contains cell bodies.

Accepted Answer

gray

Question 18

The embryonic stage lasts from Day 15 to the end of week ___.

Accepted Answer

8

Question 19

The process begins with the ___ of the ovum, which is a single cell.

Accepted Answer

fertilization

Question 20

The ___ forms between day 21-22 and is filled with amniotic fluid.

Accepted Answer

Neural tube

Question 21

The ___ is the caudal opening in the neural tube.

Accepted Answer

Inferior neuropore

Question 22

During pre-embryonic implantation, ___ germ layers form.

Accepted Answer

3

Question 23

The third germ layer that forms is referred to as the ___.

Accepted Answer

Ectoderm

Question 24

The lateral somite, referred to as the ___, gives rise to the dermis.

Accepted Answer

dermatome

Question 25

Cells adjacent to the neural tube are referred to as ___ cells.

Accepted Answer

Neural crest

Question 26

The formation of the Neural Tube occurs between Day ___ and ___.

Accepted Answer

21, 22

Question 27

The ___ forms when the edges of the neural plate fold and grow toward each other.

Accepted Answer

Neural groove

Question 28

The anteromedial somite, called the ___, develops into vertebrae and the skull.

Accepted Answer

sclerotome

Question 29

A cavity forms in the blastocyst, where the outer layer will become the ___ and the inner layer will become the ___.

Accepted Answer

fetal placenta, embryo

Question 30

The outer layer of the neural tube becomes ___ matter, which consists of axons and glial cells.

Accepted Answer

white