Integumentary System

Quiz Answers Integumentary System – “Who Am I?” Rapid Round Answers Stratum Corneum – The outermost layer of the epidermis, consisting of approximately 20–30 layers of dead, flattened, keratin-filled cells. Langerhans Cells (Epidermal Dendritic Cells) – Immune cells originating from bone marrow that help protect the epidermis by detecting foreign substances and presenting antigens. Arrector Pili Muscle – A small smooth muscle attached to hair follicles that contracts to produce goosebumps and make hair stand upright. Bilirubin – A yellow pigment produced during red blood cell breakdown. Its accumulation in the body can cause jaundice (yellowing of the skin and eyes), often associated with liver or bile duct problems. Lunula – The whitish, crescent-shaped area visible at the base of some fingernails. Hypodermis (Subcutaneous Tissue) – The fatty layer beneath the dermis where insulin is injected for gradual absorption. Granulation Tissue – New, pink or reddish, bumpy tissue containing small blood vessels and connective tissue that develops during wound healing.