BIOL-N - Biology BIOL-N 261 Chapter Notes - Chapter 4: Stratum Basale, Stratified Squamous Epithelium, Fascia
19 Jan 2017
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The integumentary system consists of the skin and associated structures, such as hair, nails, and various glands. The integumentary covers the entire surface of the body, including the eyes and eardrum. All four primary tissue types are found in the integument: an epithelium covers the surface, connective tissue provides underlying stability. Blood vessels are abundant within the connective tissue: smooth muscle is found in the walls of blood vessels in the integument, and attached to hairs, nervous tissue controls blood vessels as well as provides sensation. The two major regions of the integumentary system are: epidermis is the most superficial layer, dermis consist primarily of collagenous fibers. Below the two layers is an underlying layer called hypodermis (subcutaneous layer or superficial fascia), which anchors the integument to deeper structures. The skin is the largest organ of the body: it protects against water loss, protects against the entrance of microorganisms, and regulates temperature.
