Exam 7: Life-Span Development of the Brain and Behavior
Write a coherent and informative paragraph incorporating each of the following terms or concepts: ectoderm; neural groove; neural crest; neural tube; rhombencephalon; mesencephalon; prosencephalon
During early embryonic development, the ectoderm gives rise to the neural tube, which is the precursor to the central nervous system. The neural tube forms from the neural groove, which eventually closes to become the spinal cord and brain. As the neural tube develops, it differentiates into three primary regions: the prosencephalon, which becomes the forebrain; the mesencephalon, which becomes the midbrain; and the rhombencephalon, which becomes the hindbrain. The neural crest, a group of cells that separate from the neural tube, plays a crucial role in the development of the peripheral nervous system and other tissues. Overall, the formation and differentiation of the neural tube and its regions are essential for the proper development of the nervous system.
_______ mice are animals in which a novel gene has been inserted into the animal's genome.
Transgenic
When an axon is injured, the neuron that gave rise to the axon may also die through the process of
Summarize the development of the central nervous system from differentiated neurons extending their processes to the pruning out of cells and the forming of synapses.
The number of trinucleotide repeats in the fragile site of the X chromosome is _______ from one generation to the next.
Undifferentiated _______ cells, gathered from embryos and transplanted into the brain, will differentiate and integrate properly.
The neurofibrillary tangles seen in the brains of people with Alzheimer's disease contain
Refer to the figure.
In the process of cell migration, what is the structure indicated by the arrow?

Amyloid precursor protein is cleaved by two enzymes, presinilin and -secretase, to form _______.
Several mutant strains of mice that display abnormal locomotion also show abnormal neuronal migration during the development of the
Describe the molecular basis and the behavioral symptoms of fragile X syndrome and the manner in which it is transmitted.
In early development, the nervous system arises from which of the following embryonic layers?
Refer to the figure, which shows several stages in nervous system development.
Which process is occurring in the middle frame of the figure?

Which of the following plays little role in the development of the nervous system of
Which statement describes evidence of epigenetic effects on gene expression?
If an axon is damaged at a distance from the cell body, the portion of the axon beyond the site of injury is lost through the process of
Give a chronology of the myelination of the human brain and relate this process to behavioral observations of infants.
If both eyes are deprived of light after an animal's sensitive period, the most likely effect would be
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