Your Text Describes a Study (Castellanos Et Al

question 8

Multiple Choice

Your text describes a study (Castellanos et al.,2002) in which MRI was used to scan the brains of children with and without ADHD.Which of the following was true of this study?

• A) It was a functional MRI study.
• B) The authors compared the volumes of the motor cortices in the two groups.
• C) The authors found that children with ADHD showed a reduction in frontal cortex volume compared to children without ADHD.
• D) Researchers found no differences in the size of brain regions between the groups, lending more support for an environmental theory of the disorder.

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Definitions:

Osteoclast

A type of bone cell that breaks down bone tissue, important for bone maintenance, repair, and remodeling.

Precursor Cells

Cells that have the capacity to differentiate into more specialized cells, often referred to as stem cells.

Osteoblast

A type of cell responsible for bone formation, playing a crucial role in bone growth and repair.

Calcium

A chemical element vital for bone formation, muscle contraction, nerve function, and blood clotting in the body.