prenatal development

When a mother's immune system reacts to the fetus' blood due to an incompatibility in blood cell type, it is called __________. Rh incompatibility tremors toxoplasmosis stillbirth

A

Major organs form and cells continue to divide in the __________ stage. A. zygote B. germinal C. embryonic D. fetal

C

Severe malnutrition of the mother affects the development of the fetus with all of the following problems except __________. neurological deficits low birth weight psychological disorders birth complications

C

Neural tube defects are birth defects of the __________ and __________. A. neurons . . . umbilical cord B. brain . . . spinal cord C. brain . . . umbilical cord D. spinal cord . . . umbilical cord

B

The __________ is the age at which a fetus can survive in the event that it is born early. A. prenatal age B. age of viability C. age of sustainability D. gestational age

B

The __________ stage is the third stage of development and lasts from two months through birth. A. embryonic B. fetal C. prenatal D. germinal

B

All of the following are possible causes of preeclampsia except __________. A. genes B. stress C. low birth weight D. autoimmune disorders

C

In which prenatal stage is a fetus' genitalia clearly male or female? A. zygote stage B. germinal stage C. embryonic stage D. fetal stage

D

The organ that provides oxygen and nutrition to the fetus and filters out bodily wastes is the __________. A. heart B. zygote C. blastocyst D. placenta

D

Which prenatal stage begins when a zygote is created through fertilization? A. fetal stage B. zygote stage C. embryonic stage D. germinal stage

D

All non-harmful environmental agents that a pregnant woman ingests aid in the development of the fetus. Please select the best answer from the choices provided T F

F

The embryonic stage is the first phase of the prenatal stage, lasting only two weeks after conception. T F

F

Toxoplasmosis is a disease a pregnant woman can contract during the second trimester that can cause congenital varicella syndrome (CVS). Please select the best answer from the choices provided T F

F

What is the age of viability, and during what weeks does a fetus reach this age?

The age of viability is the age at which a baby can survive in the event of a premature birth. Most fetuses reach this age between 22 and 26 weeks. Chances of survival are slim at 22 weeks, but they steadily increase over the next few weeks.

A woman should gain an average of 25-35 pounds during pregnancy in order for healthy development of the fetus. Please select the best answer from the choices provided T F

T

A woman's primary concern during her pregnancy should be prenatal care. Please select the best answer from the choices provided T F

T

At the embryonic stage, the zygote becomes the embryo. Please select the best answer from the choices provided T F

T

Harmful environmental agents can sometimes allow fewer nutrients to reach the developing fetus. Please select the best answer from the choices provided T F

T

Proper nutrition during pregnancy helps the placenta develop healthily. Please select the best answer from the choices provided T F

T

Identify and define the three stages of prenatal development.

The three stages of development are the germinal stage, the embryonic stage, and the fetal stage. The germinal stage is the stage from conception to about two weeks. During this stage, a zygote becomes a mass of cells that implants in the uterine wall, marking the start of the placenta's formation. The embryonic stage is the second stage of development and lasts from two weeks until the end of the second month. During this stage, most of the vital organs and various bodily systems begin to develop. The third stage of development is the fetal stage, and it lasts from two months through birth.