BIO 210 Chapter 5 Exam Questions and Answers 100% Pass

BIO 210 Chapter 5 Exam Questions and Answers 100% Pass Epidermis - Answer- superficial region of skin composed of epithelial cells dermis - Answer- middle region of skin composed mainly of fibrous connective tissue (fibroblasts) and occasionally mast cells as well as white blood cells hypodermis - Answer- subcutaneous layer deep to skin composed mainly of adipose tissue, not technically part of the skin keratinocytes - Answer- cells in epidermis that produce fibrous protein keratin; dead at the surface and held together by desmosomes when alive melanocytes - Answer- cells deep in epidermis that produce pigment melanin and protect nucleus of keratinocytes from UV radiation dendritic (langerhans) - Answer- cells in epidermis that are macrophages and help activate immune system by presenting antigens to immune system cells tactile (merkel) - Answer- cells in epidermis that are touch receptors and the only type of touch receptors in epidermis basale, spinosum, granulosum, lucidum and corneum - Answer- strata of epidermis from basement membrane to apical surface stratum basale - Answer- stratum with single row of stem cells and deepest epidermal layer, contains melanocytes