KIN 190 Study Guide - Sebaceous Gland, Sodium Chloride, Adipocyte
Document Summary
You should be able to: describe the overall structure and organization of the integument, list the parts of the integument. Skin, hair, nails, glands: define the layers: epidermis, dermis and subcutaneous layer. Subcutaneous layer: connects skin to underlying structures (loose connective tissues: describe the main tissue types in each of the layers. Subcutaneous: loose connective: list the main cell types of epidermis. Melanin produced in these cells, transferred to keratinocytes. Merkel"s cell: detect light, touch, superficial pressure: describe the roles of keratinocytes and melanocytes. Melanin produced in these cells, transferred to keratinocytes: explain why skin cancer forms in cells near the basal membrane and not the more superficial layers. Cancer cells break through basement membrane, invade dermis, enter lymphatic/blood vessels, spread throughout body. Invade epidermis first, start taking action near basal membrane: describe the processes of desquamation and keratinization. Desquamation: cells of deeper layers undergo mitosis, daughter cells move towards surface, other cells slough off.
