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Integumentary System

TermDefinition
Skin largest organ of the body
Accessory Organs hair and nails
Viscera Internal Organs
Identify 3 layers of skin Epidermis, Dermis, and Hypodermis
The deepest layer of the skin? Hypodermis
The thickest layer of the skin? Dermis
The outermost layer of the skin? Epidermis
Stratum Corneum Hard outermost layer of epidermis
Stratum Basale Produces new cells of epidermis
Langerhans Cells Helps with Immunity
Melanocytes make pigment to give skin color
Keratin Protein that helps form hair, nails, and the outer layer of skin
Dermal Papillae ridges that cause fingerprints and provide gripping for surfaces
Collagen & Elastic Fibers Stretching & Movement
Loose Connective Tissue What the Hypodermis Layer is composed of
Adipose Tissue Fat
Identify the 5 functions of the skin Protection, Regulates Water Loss, Produces Vitamin D, Gathers Sensory Information, and Regulates Body temperature
Keratinization The process of cells forming keratin and hardening
What is the purpose of vitamin D? Vitamin D helps regulate the uptake of calcium by the digestive system
What is the purpose of receptors? Receptors specialize in sensing (touch, pressure, pain, and temperature )
Normal Body Temperature? 98.6
What are the signs of a hot body? Sweat and dilation of dermal blood vessels
What are the signs of a cold body? Shivering, Goosebumps, and Constriction of dermal blood vessels
Hypothermia Lower body temperature than normal interferes with the body's normal functions and eventually ends in death
Hyperthermia Higher body temperature than normal results in dehydration (from excess seating) and heat stroke.
Created by: Kyla Wimberly
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