Can anyone give some pointers or examples how to visualize for example triple integrals in Matlab?

Let's say we have the following integral:

$\displaystyle \int\int{\int_D{z dxdydz}}$

where D is given by:

$\displaystyle x^2 + y^2 \leq z^2$

$\displaystyle x^2 + y^2 + z^2 \leq 1$

$\displaystyle z \geq 0$

How would you visualize that?