Concept Quiz 8.2 Flashcards
In humans, zygote is the correct term for a developing organism during which period of time?
During the first 2 weeks after conception
The ___ gives rise to muscle and bone.
Mesoderm
Which of the following is not a common teratogen?
Folic Acid
Ava is almost 1 month old. What does she spend most of her day doing?
Sleeping
A mother’s use of alcohol, tobacco, marijuana, or cocaine during pregnancy can significantly reduce ____.
The volume of gray matter in her child’s brain
Because babies cannot talk, researchers must rely on which of the following to assess their sensory capabilities?
Measuring of heart rate, facial expression, and head movements
Which term describes a developing organism between 8 and approximately 40 weeks after conception in humans?
Fetus
During prenatal development the ___ begins to differentiate into the cells of the ectoderm, mesoderm, and endoderm.
Zygote
Mia continued to drink heavily with her friends throughout her pregnancy. Her son, now four years old, has physical abnormalities, including an underdeveloped jaw and thin upper lip, and cognitive and behavioral problems. He most likely has ___.
Fetal alcohol syndrome
What is a teratogen?
Any agent that can harm the zygote, embryo, or fetus
Ethan is just two weeks old. When his mother strokes his cheek he turns toward the touch and opens his mouth. This is called ___ reflex.
Rooting
What role does habituation play in evaluating a baby’s sensory capacities?
When the baby spends equal time looking at two stimuli, he or she likely cannot tell the difference between them
The ectoderm develops into ____.
Nerve tissue and skin
A 40-year-old woman has a greater probability of giving birth to a child with Down Syndrome than a 25-year-old woman. This is because the 40-year-old woman is more likely to _____.
Have had more exposure to harmful environmental influences, leading to faulty cell division
During Pregnancy, which organ provides the developing fetus with nutrients and oxygen and protects it from exposure to a variety of toxins and diseases-causing agents?
Placenta
