Physiology and Histology of the Skin Chapter 3 Actual Final Exam Q&A

Physiology and Histology of the Skin Chapter 3 Actual Final Exam Q&A Why do you think estheticians should have a thorough understanding of the physiology and histology of the skin? - CORRECT ANSWER-they are the fundamental sciences estheticians need to have a solid grasp on before caring for the skin. It teaches the layers, components, and functions of skin. They also include learning about the aging process, UV damage, hormonal influence, and nutrition on skin health. Four descriptors of healthy skin are: - CORRECT ANSWER--slightly moist -soft -smooth -somewhat acidic What kind of sensations can nerve sensors detect? - CORRECT ANSWER-Different nerve sensors help us to detect different sensations and perceive changes in our environment (heat, cold, touch, pain, pressure) barrier function - CORRECT ANSWER-skins mechanism that protects from irritation and dehydration transepidermal waterless - CORRECT ANSWER-water loss caused by evaporation on the skins surface acid mantle - CORRECT ANSWER-average pH of 5.5; part of the skins natural barrier function epidermal growth factor - CORRECT ANSWER-hormone that stimulates skin cells to reproduce and heal hydrolipidic film - CORRECT ANSWER-protects the skin from drying out and exposure to external factors intercellular matrix - CORRECT ANSWER-lipid substances that protect cells from water loss and irritation fibroblasts - CORRECT ANSWER-cell stimulators that are triggered by proteins and peptides Describe what happens when you sweat. - CORRECT ANSWER-heavy sweating can cause a loss of fluids, dehydration, and the loss of the mineral balance needed to keep the body functioning optimally Describe how different sized molecules penetrate the skin - CORRECT ANSWER-small molecules with permeable cell walls can penetrate the cells. Larger cells with nonpermeable cell walls can be temporarily absorbed by the glands in the skin and travel