| A | B | 
| 2 | # of layers skin has | 
| Blood Vessels | The skin contains _ _ that aid in the regulation of body temperature | 
| Dermis | Dense, fibrous, connective tissue layer; also called corium | 
| Dermis | True skin layer with nerve endings, providing sense of touch, heat and cold | 
| Dermis | Blood vessels, together with nerve fibers, sweat glands, sebaceous glands and hair follicles are found in this layer | 
| Epidermis | Thin, outermost, cellular membrane layer | 
| Glands | The skin contains _ that secrete fluids | 
| Glands | Skin's accessory organs are: hair, nails & _ | 
| Hair | Skin's accessory organs are: glands, nails & _ | 
| Integument | Means covering | 
| Integumentary System | Skin and its accessory organs (hair, nails and glands) are known as | 
| Keratin | Protein found in the basal skin layer | 
| Lipocytes | Fat cells | 
| Melanocytes | Contain melanin that gives color to the skin | 
| Nails | Skin's accessory organs are: hair, glands & _ | 
| Nerve Fibers | Skin acts as a receptor for pain, temperature, pressure & touch through _ _ under the skin | 
| Nerves | The skin contains _ that carry impulses | 
| Protective Barrier | Skin provides a _ _ against bacteria | 
| Skin | Outer covering of the body | 
| Skin | Largest organ of the body | 
| Subcutaneous layer | Thick, fat-containing underlying tissue | 
| Subcutaneous layer | Lipocytes or fat cells found here connects dermis to muscles and organs below it, acting as heat insulator | 
| Vitamin D | Skin aids in _ _ production via sunlight or ultraviolet radiation exposure | 
| Waterproof | Skin provides a _ and germ-resistant covering |