Arteries can be found in every part of the body (except the hairs, nails, upper layer of the skin, cartilage, and cornea of the eye). There are actually two subclavian arteries ... Subclavian Artery ...
Zebrafish are known to detect color and brightness with the pineal gland, which is part of the brain. How they do so is now being elucidated. We see color because photoreceptor cones in our eyes ...