BIOL 336 Chapter Notes - Chapter 5: Dense Irregular Connective Tissue, Eccrine Sweat Gland, Vellus Hair
Document Summary
Nails, hair, and skin glands are epidermal derivatives. Begins to form deff forms of connective tissue. At 12 weeks, follicles that begin to develop. Skin and accessory structures including hair, nails and glands. Converts inactive vit d into active form. Subcutaneous (subq) layer (also called hypodermis) is located underneath the. Produce keratin- tough fibrous protein that provides protection. Produce granules that prevent water entry and water loss and prevent foreign material from entering body. Melanin is produced by melanocytes in the stratum basale. Albinism is congenital disorder complete or partial absence of pigment in skin hair and eyes. Pallor: very white, pale conjunctiva of eyes. Composed of connective tissue containing collagen and elastic fibers. Reticular region consist of dense irregular connective tissue. Attaches to skin to underlying tissues and organs. High temp sweat produced which increases evaporation which lowers temp of body. Blood vessels constrict, less blood is flowing, less blood will be lost.
