Final answer:
The statement "You are unable to see arteries and arterioles without a microscope." is false because larger arteries can be seen without a microscope, whereas arterioles generally require magnification to be observed due to their small size.
Step-by-step explanation:
The statement "You are unable to see arteries and arterioles without a microscope" is generally false. The larger arteries in the body can indeed be seen without a microscope. However, arterioles, which are very small arteries that lead to capillaries, could be too small to be observed without magnification.
Under a microscope, you can see the detailed structure of both arteries and arterioles, including their tunics - the tunica intima, tunica media, and tunica externa. The tunica media of arteries appears wavy due to the partial constriction of smooth muscle, which contrasts with the smooth appearance of veins under microscopic observation.