Brain Development and Neurons Quiz

Development of the Brain and Neurons

• The brain has around 100 billion neurons, which make up 40-50% of the brain and have diverse shapes, sizes, and neurotransmitters.
• Neuronal proliferation occurs mostly in the first 5 months, while neuronal differentiation occurs mostly in 4-9 months. Neuronal connections continue to form postnatally.
• Glial cells, derived from neuronal crest cells, have various functions such as homeostasis, structural support, myelination of axons, and response to injury.
• The trilaminar embryo has three germ layers, and neural plate buckles down to form a groove, which forms the neural tube and neural crest cells that form the PNS.
• Failure of rostral neural tube closure results in anencephaly, while failure of caudal neural tube closure results in spina bifida.
• The brainstem has a diamond-shaped cavity with a sulcus limitans dividing it into dorsal sensory and ventral motor regions, and cranial nerve ganglia are associated with sensory function.
• The telencephalon forms the corpus callosum, basal ganglia, thalamus, and hypothalamus, while the lamina terminalis is the rostral tip of the neural tube.
• Sulci and gyri form as more cells form, and the insula cortex is overgrown by the temporal, parietal, and frontal lobes.
• Electrically active neurons allow rapid and reliable long-distance communication, and myelination occurs mostly postnatally.
• Astrocytes contribute to the blood-brain barrier and reuptake of neurotransmitters, while microglia are the resident immune cells of the CNS.
• The mesencephalon has colliculi, and the pons connects the brainstem to the cerebellum.
• The ventricles are remnants of the neural tube, and the cerebellar cortex, amygdala, and dorsal thalamus are parts of the prosencephalon.

Test your knowledge on the fascinating topic of brain development and neurons with this informative quiz. From the formation of the neural tube to the functions of glial cells, this quiz covers a wide range of topics related to the brain and nervous system. Whether you're a neuroscience student or simply curious about the brain, this quiz is a great way to expand your knowledge on this complex subject. Try it out now and see how much you know about the development of the brain and neurons!