Exam 3: Basic Embryology

Limb buds emerge in the human embryo about

Male and female fetuses can first be distinguished by their genitalia at

The neural tube develops from this layer.

The ________ is the embryonic stage that implants in the uterus.

Defects in the development of the neural tube may be linked to inadequate dietary intake of ________.

Somites differentiate into

The expression "breaking water" during birthing refers to the rupture of the

The embryonic period of prenatal development is the first ________ weeks.

Division of cells in a zygote is called

The wall and lining of the gut develop from the mesoderm and ________, respectively.

The sclerotomes will develop into the

The sex of the fetus can be determined externally by approximately month ________.

Conjoined twins occur as a result of

The neural tube of the embryo develops into the

Approximately ________ percent of all children have some birth defect.

Spina bifida results when the neural tube fails to close in the head.

The cavity in the mesoderm that ultimately develops into the peritoneal, pericardial, and pleural cavities is called the

The outer membrane of the amniotic sac is called the amnion.

The hand develops with ________ between the fingers.

Lungs complete development at