Conception to Implantation Timeline
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16 Terms
Ovulation
egg and sperm are produced and active for fertilization
Fertilization/Conception
sperm fertilizes the egg (can take anywhere between minutes to days after intercourse)
Day 0
Fertilization/Conception
Day 1 to Day 6
fertilized egg travels through the fallopian tube and becomes a blastocyst in the uterus
Implantation
blastocyst implants into the uterine lining
Day 7
Implantation
Day 8
development of egg’s brain starts to occur
3rd fetal month
neurons starts to transmit nerve impulses to and from brain
How many neurons are created during the 3rd fetal month?
250,000 created per minute
Between 34th and 40th week of gestation…
35% of brain growth occurs
During the last 6 weeks of gestation…
5-fold increase of White matter volume
18 days after fertilization…
neural plate forms from the embryonic tissue
At 21 days, the neural plate becomes the…
neural tube
What is the earliest nervous system tissue?
the neural tube (21 days)
After 7 weeks of fertilization…
brain structure starts to develop and neural tube thickens and enlarges into the forebrain, midbrain, and hindbrain
During the 6th week of pregnancy…
first electrical brain activity, unorganized neuron firing, no underlying human consciousness