Match the Chemical Signal with the Appropriate Description

question 5

Multiple Choice

Match the chemical signal with the appropriate description.
-Neuropeptide

• A)Chemicals produced by neurons that function as hormones
• B)Chemicals that act locally on nearby cells
• C)Chemical secreted by presynaptic terminal
• D)Influences same cell type from which it is secreted
• E)Chemical secreted into blood by specialized cells; travels some distance to target tissues

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Definitions:

Igneous Rocks

Rocks formed by the cooling and solidification of magma or lava.

Columnar Joints

Distinctive fracture-bounded columns of rock formed when hot but solid igneous rock contracts as it cools.

Pluton

A body of intrusive igneous rock that crystallized from magma slowly cooling below the surface of the Earth.

Hot Spot

A location on the Earth's surface that has experienced prolonged volcanic activity, thought to be caused by a rising mantle plume.