Question 1

The cell mass that develops from the fertilized egg implants itself in the uterine wall during the _____ stage of prenatal development.
A)fertilization
B)fetal
C)embryonic
D)germinal

Accepted Answer

The germinal stage is the first phase of prenatal development, lasting from conception to about two weeks, during which the fertilized egg implants itself in the uterine wall.

Question 2

The stage of prenatal development during which most miscarriages are likely to occur is the _____ stage.
A)zygotic
B)germinal
C)fetal
D)embryonic

Accepted Answer

The embryonic stage, which occurs from the 3rd to the 8th week after fertilization, is when most miscarriages are likely to occur due to the critical development of major organs and structures.

Question 3

Chelsey is pregnant and is concerned about taking an over-the-counter medication for her allergies. She should be MOST concerned if her pregnancy is currently at the _____ stage.
A)placental
B)germinal
C)fetal
D)embryonic

Accepted Answer

During the embryonic stage (weeks 3-8 of pregnancy), the developing baby is most vulnerable to damage from substances like drugs, alcohol, and certain medications, because this is a critical period for the formation of internal organs and structures.

Question 4

The third stage of prenatal development, which lasts from two months through birth, is referred to as the _____ stage.
A)postgerminal
B)embryonic
C)fetal
D)postnatal

Accepted Answer

The third stage of prenatal development is referred to as the fetal stage. This stage begins two months after conception and continues until birth.

Question 5

Felicia is pregnant, and her blood pressure has become dangerously high. Her doctor wants to deliver her baby by Cesarean section, even though Felicia is only 26 weeks pregnant. If Felicia's baby is delivered at this point in her pregnancy, the baby will have
A)less than a 10% chance of survival.
B)approximately a 25% chance of survival.
C)approximately a 67% chance of survival.
D)virtually a 100% chance of survival.

Accepted Answer

With advances in neonatal care, babies born at 26 weeks have a survival rate of approximately 67%. Survival rates for preterm babies have improved significantly, and while there are risks associated with being born this early, many babies do survive.

Question 6

Omar's wife conceived a baby seven days ago and does not yet know she is pregnant. His wife's pregnancy is currently in the _____ stage.
A)germinal
B)embryonic
C)fetal
D)placental

Accepted Answer

The germinal stage is the first stage of prenatal development and covers the period from conception to two weeks. Since Omar's wife conceived only seven days ago, the pregnancy is in the germinal stage.

Question 7

A one-celled organism formed by the union of a sperm and egg is known as a(n)
A)zygote.
B)germinal.
C)embryo.
D)fetus.

Accepted Answer

A zygote is the initial cell formed when a new organism is produced by sexual reproduction, created by the union of sperm and egg.

Question 8

During which of the following stages of development do the heart, spine, and brain emerge?
A)Postnatal
B)Placental
C)Fetal
D)Embryonic

Accepted Answer

During the embryonic stage of development, which occurs from the second to the eighth week after fertilization, the heart, spine, and brain begin to form. This stage is crucial for the development of the major organs and systems.

Question 9

Both Amy and Barb are pregnant. Currently, Amy's pregnancy is in the shortest stage of prenatal development and Barb's is in the longest stage. Amy's pregnancy is in the _____ stage, and Barb's is in the _____ stage.
A)germinal; fetal
B)embryonic; fetal
C)germinal; embryonic
D)fetal; germinal

Accepted Answer

The germinal stage is the shortest stage of prenatal development, occurring in the first two weeks after conception. The fetal stage is the longest, lasting from the end of the embryonic stage (about the 9th week after conception) until birth.

Question 10

Avery is excited because she has begun to feel her baby kicking and moving in her uterus. If Avery can feel her baby moving, her pregnancy must be in the _____ stage.
A)embryonic
B)germinal
C)fetal
D)neonatal

Accepted Answer

The fetal stage is when the baby's movements become noticeable to the mother, typically starting around the second trimester of pregnancy. The embryonic and germinal stages are too early for such movements to be felt, and the neonatal stage refers to the period after birth.

Question 11

At the end of the _____ stage of prenatal development, the developing organism is about one inch long and has already developed most of the vital organs and bodily structures.
A)germinal
B)embryonic
C)zygote
D)fetal

Accepted Answer

The embryonic stage of prenatal development occurs from the 2nd to the 8th week after conception. During this stage, the developing organism is called an embryo. It is at this time that most of the vital organs and bodily structures begin to form, making the end of this stage a significant milestone in development. By the end of the embryonic stage, the organism is indeed about one inch long and has developed the foundational structure of most vital organs.

Question 12

Low birth weight has been shown to be associated with an increased risk of _____ later in adulthood.
A)heart disease
B)schizophrenia
C)mental retardation
D)delayed motor and mental development

Accepted Answer

Low birth weight is associated with an increased risk of heart disease later in adulthood. This is due to the fact that low birth weight can be an indicator of poor fetal growth and development, which may affect the development of the heart and vascular system, leading to increased risk of cardiovascular diseases in later life.

Question 13

Premature babies who survive are typically born during the _____ stage.
A)germinal
B)embryonic
C)fetal
D)postnatal

Accepted Answer

Premature babies are those born before the completion of 37 weeks of pregnancy, which falls within the fetal stage. The fetal stage begins in the ninth week of pregnancy and continues until birth, making it the correct stage during which premature babies are typically born.

Question 14

The structure that allows both oxygen and nutrients to pass into the fetus from the mother's bloodstream and bodily wastes to pass out to the mother's bloodstream is the ​
A)uterine wall.
B)zygote.
C)placenta.
D)proximodistal organ.

Accepted Answer

The placenta is the organ that facilitates the exchange of oxygen, nutrients, and waste between the mother's and the fetus's bloodstreams.

Question 15

The age of viability, referring to the age at which the fetus _____, is reached _____.
A)can first respond to stimulation; at about 9 weeks
B)can survive if born prematurely; between 23 and 25 weeks
C)first has a heartbeat; at about 16 weeks
D)experiences no further cell division in the brain; between 36 and 38 weeks

Accepted Answer

The age of viability is defined as the age at which the fetus can survive outside the womb if born prematurely, which is typically between 23 and 25 weeks of gestation. Advances in neonatal care have helped to lower this age threshold over time.

Question 16

Severe maternal malnutrition increases the risk of ​
A)heart defects and irritability.
B)birth complications and neurological defects.
C)mental retardation.
D)delayed motor and mental development.

Accepted Answer

Severe maternal malnutrition can lead to birth complications and neurological defects due to inadequate nutrients necessary for fetal development.

Question 17

The correct sequence of the stages of prenatal development are
A)germinal, fetal, embryonic.
B)embryonic, fetal, germinal.
C)germinal, embryonic, fetal.
D)fetal, germinal, embryonic.

Accepted Answer

The correct sequence starts with the germinal stage (conception to 2 weeks), followed by the embryonic stage (3 to 8 weeks), and ends with the fetal stage (9 weeks to birth).

Question 18

The embryonic stage of prenatal development refers to the
A)formation of a zygote.
B)implantation of the fertilized egg into the uterine wall.
C)second through eighth weeks of prenatal development.
D)last seven months of the pregnancy.

Accepted Answer

The embryonic stage is the period from the second to the eighth week of prenatal development, during which major organs and structures within the body begin to form.

Question 19

The sequence of age-related changes that occur as a person progresses from conception to death is known as
A)maturation.
B)the perinatal period.
C)development.
D)childhood.

Accepted Answer

Development is the term that encompasses the sequence of age-related changes from conception to death, including physical, cognitive, and social changes.

Question 20

The prenatal period refers to the
A)period from conception to implantation.
B)nine months from conception to birth.
C)period of time immediately after birth.
D)time period before conception takes place.

Accepted Answer

The prenatal period is the developmental period from conception to birth, typically lasting around nine months.

Quiz 10: Human Development Across the Life Span

The cell mass that develops from the fertilized egg implants itself in the uterine wall during the _____ stage of prenatal development.

The stage of prenatal development during which most miscarriages are likely to occur is the _____ stage.

Chelsey is pregnant and is concerned about taking an over-the-counter medication for her allergies. She should be MOST concerned if her pregnancy is currently at the _____ stage.

The third stage of prenatal development, which lasts from two months through birth, is referred to as the _____ stage.

Felicia is pregnant, and her blood pressure has become dangerously high. Her doctor wants to deliver her baby by Cesarean section, even though Felicia is only 26 weeks pregnant. If Felicia's baby is delivered at this point in her pregnancy, the baby will have

Omar's wife conceived a baby seven days ago and does not yet know she is pregnant. His wife's pregnancy is currently in the _____ stage.

A one-celled organism formed by the union of a sperm and egg is known as a(n)

During which of the following stages of development do the heart, spine, and brain emerge?

Both Amy and Barb are pregnant. Currently, Amy's pregnancy is in the shortest stage of prenatal development and Barb's is in the longest stage. Amy's pregnancy is in the _ stage, and Barb's is in the _ stage.

Avery is excited because she has begun to feel her baby kicking and moving in her uterus. If Avery can feel her baby moving, her pregnancy must be in the _____ stage.

At the end of the _____ stage of prenatal development, the developing organism is about one inch long and has already developed most of the vital organs and bodily structures.

Low birth weight has been shown to be associated with an increased risk of _____ later in adulthood.

Premature babies who survive are typically born during the _____ stage.

The structure that allows both oxygen and nutrients to pass into the fetus from the mother's bloodstream and bodily wastes to pass out to the mother's bloodstream is the

The age of viability, referring to the age at which the fetus _, is reached _.

Severe maternal malnutrition increases the risk of

The correct sequence of the stages of prenatal development are

The embryonic stage of prenatal development refers to the

The sequence of age-related changes that occur as a person progresses from conception to death is known as

The prenatal period refers to the