- Neurogenesis is the
a. process of developing interconnections between neurons.
b. process of forming the neural tube, which will become the brain and spinal cord.
c. production of a fatty substance around axons to insulate fibers and speed transmission within a neuron.
d. production of new neurons in the brain.
- __ is the movement of neurons from the location where they are produced to their final location in the brain.
a. Neural migration
b. Myelination
c. Canalization
d. Neurulation
- Which of the following statements is FALSE regarding neurogenesis and neural migration?
a. The massive production of new neurons begins about the fifth week after fertilization.
b. Neurogenesis peaks about three to four months after fertilization.
c. In the cerebral cortex, the first cells to migrate occupy the closest position, with newcomers migrating to higher layers.
d. The organization of brain cells is determined by a process called neurulation.
- Drinking alcohol while pregnant tends to cause
a. abnormal neural migration in the developing brain.
b. abnormal neurogenesis in the developing brain.
c. both abnormal neurogenesis and abnormal neural migration in the developing brain.
d. the child to be born addicted to alcohol as well as unspecified brain damage.
- Synaptogenesis is the
a. process of developing interconnections between neurons.
b. process of forming the neural tube, which will become the brain and spinal cord.
c. production of a fatty substance around axons to insulate fibers and speed transmission within a neuron.
d. production of neurons in the brain.
- __ is the process of developing interconnections between neurons.
a. Neurulation
b. Neurogenesis
c. Synaptogenesis
d. Myelination
- Which of the following is/are TRUE regarding synaptogenesis?
a. Synaptogenesis begins only weeks after neurogenesis starts and tapers off in different brain regions about one to three years after birth.
b. Early synaptogenesis is a genetically-controlled process producing many more synapses between one neuron and another than are needed.
c. Synapses that are activated by particular experiences undergo changes that make them more permanent.
d. All of these statements are true.
- __ is sometimes referred to as neural Darwinism, a type of survival of the fittest in which activated interconnections beat out weaker neighbors for a place in the brain. This process that occurs throughout childhood is essential for intellectual growth.
a. Synaptic pruning
b. Neural migration
c. Synaptic canalization
d. Neurulation
- Neural plasticity is the
a. process of developing interconnections between neurons.
b. process of forming the neural tube, which will become the brain and spinal cord.
c. production of a fatty substance around axons to insulate fibers and speed transmission within a neuron.
d. ability of one’s brain to change with experience.
- Myelination is the
a. process of developing interconnections between neurons.
b. process of forming the neural tube, which will become the brain and spinal cord.
c. production of a fatty substance around axons to insulate fibers and speed transmission within a neuron.
d. production of neurons in the brain.