GMAE 1

Pregnancy begins with conception, also known as

Birth occurs, on average

LMP stands for

the fertilized egg initially undergoes a series of rapid divisions that lead to the formation of a ball of cells called the

Fluid seeps into the morula, and its cells realign themselves to form a fluid-filled hollow ball

The embryonic period extends from the beginning of the _____ and end of the ____

The embryonic period extends from the beginning of the second week to the end of the eighth week; at this time the developing life is known as an

At about day 8 of gestation, the cells of the embryoblast differentiate into a two-layered disk,
called the

In 2weeks time the axis of the embryo is established and is represented by a slight enlargement of the ectodermal and endodermal cells at the head (or rostral) end of the embryo in a region known as the

During the third week of development the bilaminar embryonic disk is converted to a

the floor of the amniotic cavity is formed by ectoderm, and within it a structure called the ___ develops along the ____

The rostral end of the streak finishes in a small depression called the The nervous system develops as a thickening
within the ectodermal layer at the rostral end
of the embryo.

is formed to support the primitive embryo.

structure in which the heart forms.

During the next ____ of development, major tissues and organs differentiate from the triploblastic embryo; these include the head and face and the tissues contributing to development of the teeth.

The ___ develops as a thickening
within the ectodermal layer at the rostral end
of the embryo.

This thickening constitutes the___,
which rapidly forms raised margins.

These folds in turn encompass and delineate
a deepening midline depression.

The hindbrain exhibits segmentation by forming a series of eight bulges known as ____, which play
an important role in the development of
the head.

Embryonic connective tissue elsewhere is derived from mesoderm and is known as

During the third week of development, the cells of
the embryo form the three primary embryonic layers:

forms the epithelium that covers the body and gives rise to cell in the nervous system.

Ectodermal Layer are columnar and reorganize
to form the

forms the connective tissue and soft tissues such as bone, muscles and fats

forms the gastrointestinal tract and associated structures involved in digestion.