Vitamin D is synthesized at the skin. It is synthesised by the reaction between the sun's rays and estrogen (Actually look up to be sure, it could be a different steroid very similar to estrogen)
Your skin is responsible for synthesis of Vitamin D.
The Sun causes the synthesis of Vitamin D in the skin.
synthesis of a Vit. D
upper layer of the skin
Ultraviolet B (UVB) light with a wavelength of around 290-320 nanometers is responsible for stimulating the production of vitamin D in our skin. Exposing the skin to UVB light for a short period of time is crucial for the synthesis of vitamin D.
The reticular layer is 80 percent of the dermis and is responsible for the tension lines in the skin. These lines are called Langer's lines and are important in surgical procedures to minimize scarring.
The skin's functions are for protection, water resistant barrier, Vitamin D synthesis, sensation, thermoregulation and social functions (i.e., facial expressions.) The hypodermis does NONE of these. It's function is as an energy reservoir and for thermal insulation. Therefore, it does not meet the criteria for skin proper.
The dermal layer responsible for fingerprints is the papillary layer.stratum germinativum
Which layer of the epidermis is responsible for water resistance
A basal layer is the deepest layer of the epidermis.
The reticular layer.
Skin is an example of an organ in the human body that serves various functions such as protection, temperature regulation, sensation, and Vitamin D synthesis.