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Dermis
Human Anatomy 232
| Term | Definition |
|---|---|
| Dermis | Dense, fibrous, connective tissue layer Contains collagen. aka true skin |
| Papillary Layer | superfiscal dermis, areolar connective tissue, made up of dermal papillae |
| Reticular Layer | deeper dermis, dense irragular connective tissue, name means "network" and refers to the meshwork of collagen fibers |
| Striae | aka stretch marks. a stripe or line distinguished from surrounding tissue by color, texture, or elevation. |
| Hypodermis is made of? | aka subcutaneous, areolar connective and adipose tissue, |
| Hair bulb | epithelial, where the hair originates in the dermis |
| Hair root | is the hair within the follicle internal to the skin surface |
| Hair shaft | the portion of the hair that extends above the surface |
| Hair follicle | oblique tube that surrounds the root hair |
| Arrector pili muscle | thin ribbons of smooth muscle, stimulated in response to an emotional state, upon stimulation they create "goose bumps" |
| Eccrine gland | produce sweat in response to emotional tension, heat and pain, sweat aids to control body temperature |
| Where is Apocrine gland found | distributed in axillary, anal, areolar, and public regions |
| Sebaceous | associated with hair follicles, produce sebum which coats lubricants and acts an antibacterial |
| Ceruminous glands | External acoustic meatus and produces cerumen |
| Mammary | breasts, milk to nourish offspring |
| Free nerve ending | termainal branches of dendrites. least complex tactile receptor and are close to the skin surface |
| root hair plexus | specialized free nerve endings, sheathed around hair follicles in the reticular layer of the dermis |
| Tactile cells | specialized epithelial that stimulate sensory nerves for touch. most numerous type of receptor |
| Krause bulb | mucous membrane of the oral cavity, where they detect light pressure stimuli and low-frequency vibrations |
| Ruffini corpuscle | detect continuous deep pressure and distortion in the skin. located in the dermis and subcutaneous layers |
| Pacinian corpuscle | aka Lamellated, detect deep pressure and high-frequency vibration. |
| Meissner corpuscle | aka Tactile corpuscle, larger than pacinian, detect light touch, shapes, and texture. |
| Hypodermics | pads and protects the body, acts as an energy reservoir, and provides thermal insulation. |
| Apocrine glands | produce viscous, complex secretion, influenced by hormones, asks in signaling/communication. |
| Pacinian corpuscle are found | deep within the reticulay layer of the dermis, palms, feet, breast, external genitalia, synovial membranes of joints and in the walls of some organs. |
| Meissner corpuscles are found | housed within the dermal papillae of lips, palms, eyelids, nipples, and genitals |
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