In the Initiation of Limb Development,the Expression and Secretion of ____________

question 6

Multiple Choice

In the initiation of limb development,the expression and secretion of ____________ by local mesodermal cells stimulate the overlying ectoderm to secrete fibroblast growth factor-8.

• A)Sonic hedgehog
• B)Fibroblast growth factor-10
• C)Bone morphogenetic protein-7
• D)Msx-1
• E)None of the above

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Definitions:

Rock Avalanche

High-velocity, turbulent flow of rock, sediment, and soil that results from the collapse of a steep mountain front.

Debris Slide

The downslope movement of soil, weathered sediment, or other unconsolidated material, partly as a sliding, coherent mass and partly by internal shearing and flow.

Rotational Slide

A type of landslide involving the rotational movement of rock or soil along a curved surface, typically caused by the undercutting of a slope or the saturation of soil.

Debris Avalanche

A high-velocity flow of soil, sediment, and rock, commonly from the collapse of a steep mountainside.