Iris color is determined by the amount of brown melanin pigment in the posterior (back) of the iris, whether blue, green or brown, and the occasional golden hue is iris stroma or muscle overlying. Heterochromia is a color difference between eyes. Since you only show one, I canât tell.
Definition of Distal. Distal: The more (or most) distant of two (or more) things. For example, the distal end of the femur (the thigh bone) is the end down by the knee; the end more distant from the torso. The distal bile duct is the far end of the cystic duct, the end away from the gallbladder. And the distal lymph node in a chain of nodes is the most distant one.
Anatomical terms for limbs: Proximal means near the trunk. Distal means away from the trunk. Preaxial border means the outer border in the upper limb and inner border in the lower limb.natomical terms for describing relations: Terms of Relation. Anterior means towards the front. Posterior means towards the back. Superior means towards the head. Inferior means towards the feet.