The epidermis protects deeper tissues from solar radiation through the action of melanocytes.
Melanocytes are specialized skin cells situated in certain parts of the body such as the lower layer of the skin's epidermis, the inner ear, the middle layer of the eye, heart, and bones. Melanocytes are responsible for the production of the protective skin-darkening pigment known as melanin that determines the skin’s colour. Melanin mainly functions as protection against solar radiation. It also play a role in the immune system.
What? Ermmn... Answer to that top question is A.
Answer: Human evolution, the process by which human beings developed on Earth from now-extinct primates. Viewed biologically, we humans are Hono Sapines, a culture-bearing upright-walking species that lives on the ground and very likely first evolved in Africa about 315,000 years ago.
The most appropriate statement that is explaining the effect and cause during muscle contraction is. “The release of calcium ions causes myosin and actin to attach to each other.” The activation of muscles helps in the generation of muscles that send out the signals to the neurons.
