Answer:
This is synaptic pruning- it removes them
Explanation:
The gaps and the portions of neurons between adjacent neurons is called synapse.It role is to moderate synaptic connections among neurons.
As organisms (man and other higher animals)develop from birth to adult,new synaptic connections are formed,and old ones are removed.The process whereby the the axon and dendrite, as part of the synapse, decay and removed by the brain is called synaptic pruning or pruning process.
This process begins at childhood and continue till maturity- at mid twenties.it occurs during sleep.
it helps to improve learning and memory,because new connections are made to replace the old ones,and therefore smooth transition of the brain from childhood to adulthood
Three models have been used to explain pruning-Axon degeneration,retraction and Axon shedding.
Conception also known as fertilization, is when the nucleus of a sperm cell fuses with the nucleus of an egg cell in the uterus thus creating a fertilized egg or zygote that will grow to become an embryo and eventually a fetus. Conception is the fusing of the two cells to create one fertilized ovum.
