Ch 3 Prenatal Development Flashcards
What are the periods of Prenatal Development?
Germinal, Embryonic, and Fetal then Birth
What is the Germinal Period?
From conception to implantation on uterine wall (8-10 days post-conception)
What happens to the egg during Germinal period?
it becomes a zygote (fertilized egg)
What is Embryonic Period?
From Implantation to 8th week ; formation of major organs
What is ectoderm?
CNS, outer skin, nails, teeth, eye lens, inner ear
What is endoderm?
digestive system, lungs
What is Mesoderm?
Circulatory system, muscles, nomes, and inner skin layer
What is Embryonic?
Implantation to 8th week; sex differentiation
What is Cephalocaudal pattern?
a growth pattern, from head to toe
What is Proximodistal pattern?
a growth pattern; tendency for more general functions of limbs
What is the Fetal Period?
from the 9th week post conception until child birth; major growth of organs and fetus
What pair of the body gains nutrients and disposal of waste?
Umbilical cord and placenta
What is necessary for closure of the neural tube?
Folic acid; could cause Spina bifida and
What is a teratogen?
an external agent that can cause damage or death during prenatal development
What are non drug related teratogens?
STI’s, radiation, and mercury
What is induced labor?
when the healthcare provider gives you medications
What are the risks of a C-section?
exposes mother and infant to increase negative risk and there is an increased maternal recovery
What is Apgar scale?
a newborn assessments that checks physical condition such as heart rate and color and muscle tone
What is Brazelton Neonatal Assessment Scale?
a newborn assessments that checks behavioral condition ; cuddliness and defensive movements
What is an axon?
Neural component that reaches out to connect to other neurons
What is Dendrite?
Neural component receptive to communication
What is a Synapse?
Gap between axon and dendrite
What is Myelin?
Fatty substance that coats axon, acts as an insulator to increase neural communication
What is Synaptogenesis?
formation of new synapses
