Fetal Development and Twins Quiz

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During which period of prenatal development does organogenesis occur?

Fetal period

Embryonic period (correct)

Third trimester

Germinal period

What is the critical level of neurological maturation achieved by 32 weeks of prenatal development?

Ability to regulate body temperature

Ability to hear sounds

Ability to trigger the birth process (correct)

Ability to see light

Which aspect of prenatal development does the third trimester mainly focus on?

Quickening

Fetal growth and maturation (correct)

Implantation

Organogenesis

What triggers the birth process at the end of the third trimester?

Hormones produced by the fetal brain Signup and view all the answers

Which type of twins are always of the same sex and highly similar in physical appearance?

Monozygotic twins Signup and view all the answers

What is the term used for babies born before 38 weeks of gestation?

Preterm infant Signup and view all the answers

Which trimester marks the stage where sensory receptors of the fetus are well established?

Second trimester Signup and view all the answers

What is the approximate size of a fetus at the end of the third month of prenatal development?

~1 inch Signup and view all the answers

Girls exhibit slightly faster skeletal development compared to boys by approximately how many weeks?

~4 weeks ahead Signup and view all the answers

'Quickening' in prenatal development refers to which significant event?

Mother being able to feel fetal movements Signup and view all the answers

Which factor is considered to impact the fetus during pregnancy according to the text?

Drug use Signup and view all the answers

What is a common emotional state experienced by pregnant women according to the text?

Anxiety and depression Signup and view all the answers

How can physical changes during pregnancy be perceived by pregnant women?

Source of stress Signup and view all the answers

What impact does poverty have on the fetus during pregnancy?

Negative impact on fetus Signup and view all the answers

Which of the following is NOT considered a factor affecting the fetus during pregnancy according to the text?

Physical therapy Signup and view all the answers

What is the term used to describe the condition when a zygote travels out of the fallopian tube and implants in the uterine wall?

Implantation Signup and view all the answers

What process involves the establishment of all body structures and internal organs in the developing fetus?

Organogenesis Signup and view all the answers

At what point does a fetus reach about 1 inch in length during development?

In the third month Signup and view all the answers

What is primarily responsible for making the male and female brains slightly different during prenatal development?

Sex hormones Signup and view all the answers

At what stage of prenatal development does a fetus grow to around 10 inches and approximately 2 pounds in weight?

Second trimester Signup and view all the answers

What is the term used to describe when a developing fetus has grown large enough that its movements can be felt by the mother?

Quickening Signup and view all the answers

Which type of twins may be of different sexes and have only about half their genetic material in common?

Dizygotic twins Signup and view all the answers

What is the term used to describe babies born before the gestational period of 38 weeks?

Preterm infant Signup and view all the answers

What is achieved by a fetus at the end of the third trimester that triggers the birth process?

Neurological maturation Signup and view all the answers

What triggers malformations in the fetus if exposed to substances like viruses, medicines, or alcohol during prenatal development?

Teratogens Signup and view all the answers

What is a potential impact on the fetus during pregnancy due to the mother's age?

Increased risk of genetic abnormalities Signup and view all the answers

How can poverty potentially affect the fetus during pregnancy?

Higher likelihood of premature birth Signup and view all the answers

Which emotional state experienced by pregnant women can be particularly harmful to the fetus?