1. Anatomy (structure)
Embryology - first 8 weeks of development after fertilization
Development biology- development from fertilization to death
cell biology - cell
gross anatomy - can be seen by the naked eye
systemic anatomy - organ systems
Physiology (functions)
neurophysiology- nerve cells
endocrinology- hormones
cardiovascular physiology- heart and blood vessels
immunology- how the body defends againsts diseases
renal physiology- kidneys
pathophysiology- functional changes associated with disease and aging
2. Our skin, especially the epidermis, is the organ that is most exposed to the sun. Our epidermis has melanocytes, which produces melanin that protects from UV.