(this isn't biology because they didn't have the subject I need) What kind of texture would an igneous rock that formed deep underground have?

completely smooth

coarse-grained

fine-grained

grains of many different sizes

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.