1 / 5

Appendages of the Skin

Appendages of the Skin. Hair Produced by hair bulb Consists of hard keratinized epithelial cells Melanocytes provide pigment for hair color. Figure 4.7c. Hair Anatomy. Central medulla Cortex surrounds medulla Cuticle on outside of cortex Most heavily keratinized. Figure 4.7b.

myra
Télécharger la présentation

Appendages of the Skin

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. Appendages of the Skin • Hair • Produced by hair bulb • Consists of hard keratinized epithelial cells • Melanocytes provide pigment for hair color Figure 4.7c

  2. Hair Anatomy • Central medulla • Cortex surrounds medulla • Cuticle on outside of cortex • Most heavily keratinized Figure 4.7b

  3. Associated Hair Structures • Hair follicle • Dermal and epidermal sheath surround hair root • Arrector pilli • Smooth muscle • Sebaceous gland • Sweat gland Figure 4.7a

  4. Appendages of the Skin • Nails • Scale-like modifications of the epidermis • Heavily keratinized • Stratum basale extends beneath the nail bed • Responsible for growth • Lack of pigment makes them colorless

  5. Nail Structures • Free edge • Body • Root of nail • Eponychium – proximal nail fold that projects onto the nail body Figure 4.9

More Related