1 / 11

Hair & Nail

Hair & Nail. Integumentary System. Hair. Hair root – a knot of sensory nerve endings which wraps around each hair bulb Hair shaft – part of the hair that projects outside the skin; made mostly of keratin (tough protein produced by kerat Hair bulb matrix – actively dividing germinal layer.

lisbet
Download Presentation

Hair & Nail

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hair & Nail Integumentary System

  2. Hair Hair root – a knot of sensory nerve endings which wraps around each hair bulb Hair shaft – part of the hair that projects outside the skin; made mostly of keratin (tough protein produced by kerat Hair bulb matrix – actively dividing germinal layer

  3. Hair Follicle Epidermal sheath – composed of epithelial cells; inner layer of follicle Dermal sheath – composed of connective tissue; outer layer of follicle Connective tissue papilla – protrudes from dermal sheath; provides nutrition

  4. Hair • Melanocytes – cells that produce melanin (pigment responsible for skin & hair color) • Arrectorpili– smooth muscle which connects the hair follicle to the dermis • Responsible for “goose bumps”

  5. http://www.bienetrespa.com/skin-care-101/arrector-pili-muscleshttp://www.bienetrespa.com/skin-care-101/arrector-pili-muscles

  6. Parts of Hair Shaft Cuticle – outer most layer Cortex – middle layer Medulla – innermost layer

  7. Damaged cuticle Normal cuticle http://todaystresses.com/info/what-is-remy-hair

  8. Nail Free edge - visible unattached portion Body – visible attached portion Root – embedded in the skin; adhered to nail bed Nail fold – skin that overlaps the nail (lateral and proximal) Nail bed – composed of epithelial tissue

  9. Nail • Nail matrix – thickened proximal part of the nail bed responsible for nail growth • Lunula– visible part of nail matrix • Cuticle or eponychium – next to proximal nail fold

More Related