Lynne and Rob are expecting a baby. Describe the development of their baby in each of the three stages of prenatal development. To what extent might teratogens affect the baby's development during each of the stages?
What will be an ideal response?
There are three stages of prenatal development. The germinal period starts at conception and goes through the first two weeks of life. During this time, the fertilized egg divides rapidly and attaches to the mother. Weeks two through eight are the embryonic period, during which all of the basic structures and systems are formed. The fetal period lasts from 9 to 38 weeks. During this time, the fetus grows in size and begins to show signs of awareness. Teratogens are environmental toxins that impact development. Teratogens have their minimal effect during the germinal stage. The greatest impact of teratogens is observed during the embryonic stage. Damage may occur to major organs and body systems.
You might also like to view...
Based on what is known about circadian rhythms and jet lag, you might expect that a flight attendant would experience the most jet lag on a flight from
a. Philadelphia to San Francisco (east to west). b. Minneapolis to Houston (north to south). c. San Francisco to Philadelphia (west to east). d. Houston to Minneapolis (south to north).
Johannes Müller held that whatever excites a particular nerve establishes a special kind of energy unique to that nerve.
Answer the following statement true (T) or false (F)
Aerobic exercise is important to pregnant women because it helps to _____
lower muscle mass and increase fat mass increase fetal heart rate and blood pressure stop dangerous teratogens from reaching the fetus increase the woman's ability to process oxygen
According to the concept of gene–environment interaction,
A) people respond similarly to the same qualities of the environment. B) people have unique, genetically influenced reactions to particular experiences. C) people with different gene–environment combinations never respond similarly. D) heredity restricts the development of some characteristics to just one or a few outcomes.