Question

hot 1s i4?

Answer 1

It is the cross section of skin showing different layers.i imagine that all are images of skin at different portions of body. Skin got different layers ie three layers called epidermis , dermis and hypodermis. Each layer is made of distinct tissues and performs distinct functions to support the body.The epidermis is made of four to five layers of epithelial tissue that constantly grows from the inside out and replaces most of its cells every few weeks.Deep to the epidermis are the connective tissues of the dermis. Two major regions make up the dermis: the papillary layer (stratum papillarosum) and the reticular layer (stratum reticulosum.The papillary layer is the most superficial layer of the dermis; it contacts the epidermis. Between the epidermis and dermis it forms an undulating border that is rich in blood vessels and nervous tissue. Deep to the dermis is the subcutaneous layer, also known as the hypodermis. The subcutaneous layer contains mostly loose connective tissues such as adipose and areolar connective tissue. These tissues store energy as triglycerides; provide insulation to the underlying tissues.