Brain Development and Mapping Quiz

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Questions and Answers

What is the percentage of the newborn's brain weight compared to its adult weight at birth?

25 percent

By the second birthday, what percentage of the adult brain weight is the newborn's brain?

75 percent

What are the four main areas, called lobes, in each hemisphere of the brain's cerebral cortex?

Frontal, Occipital, Temporal, Parietal

What are the primary functions of the frontal lobes of the cerebral cortex?

Voluntary movement, thinking, personality, and intentionality or purpose Signup and view all the answers

In which lobes of the cerebral cortex do scientists distinguish a primary role in hearing, language processing, and memory?

Temporal lobes Signup and view all the answers

What is lateralization in the context of brain function?

Lateralization refers to the specialization of function in one hemisphere of the cerebral cortex or the other. Signup and view all the answers

How do complex thinking and brain hemispheres relate in normal individuals?

Complex thinking in normal people is the outcome of communication between both hemispheres of the brain. Signup and view all the answers

What is the difference in electrical brain activity between the left and right hemispheres in newborns when they are listening to speech sounds?

Newborns show greater electrical brain activity in the left hemisphere than the right hemisphere when they are listening to speech sounds. Signup and view all the answers

What are the two types of fibers extending from a neuron's cell body, and what signals do they carry?

The two types of fibers are axons and dendrites. Axons carry signals away from the cell body, while dendrites carry signals toward it. Signup and view all the answers

What is the role of myelination in brain development?

Myelination insulates axons, helps electrical signals travel faster, and may be involved in providing energy to neurons and in communication. Signup and view all the answers

Brain Development and Mapping Quiz

Questions and Answers

What is the percentage of the newborn's brain weight compared to its adult weight at birth?

By the second birthday, what percentage of the adult brain weight is the newborn's brain?

What are the four main areas, called lobes, in each hemisphere of the brain's cerebral cortex?

What are the primary functions of the frontal lobes of the cerebral cortex?

In which lobes of the cerebral cortex do scientists distinguish a primary role in hearing, language processing, and memory?

What is lateralization in the context of brain function?

How do complex thinking and brain hemispheres relate in normal individuals?

What is the difference in electrical brain activity between the left and right hemispheres in newborns when they are listening to speech sounds?

What are the two types of fibers extending from a neuron's cell body, and what signals do they carry?

What is the role of myelination in brain development?

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