Unlike smooth muscle, cardiac muscle is
a. responsible for movement of food within the digestive tract.
b. found in the wall of hollow parts of the human body.
c. striated.
d. connected by gap junctions.

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.