Cuticle Dermal root sheath Hair follicie Medulla )Transverse section of ahairshaft Cortex Hair papila Melanocyte D)Frontal section olahair root and hairfollide Matrix Epithelal root sheath

OUTLINE the different epidermal layers with their unique properties and their functions.

Describe the hair and give the components

location for mitosis of the nail keratinocytes responsible for nail growth   most distal portion used to protect fingertips from unnecessary stimuli; white in color due to the absence of tissue underneath   superficial layer of hardened dry non-pigmented cells used to protect underlying tissues   viewed as having a red coloration due to the deep supply of blood vessels and adhered to the outer surface of the nail   most superficial layer of keratinocytes containing melanin that are flexible due to the presence of sebum distributed on its surface   protective seal /border of thicken tissue preventing microorganisms, debris, chemicals, & liquids from moving between the dermis and epidermis of the skin   most proximal white portion of the nail where the younger cells of the nail are located   cuticle  epidermis free edge  lunula  nail bed nail plate nail root

hair bulbs • hair follicle • hair root • papilla of hair • sebaceous gland 1 1 2 2 3 4 5 4 5 10x Courtesy Michael Ross, University of Florida

Which of the following phenomena involve dermal plasticity? (can be more then one) Group of answer choices release of Cuvierian tubules casting off arms (autotomy) extension of podia evisceration

I’m confused

Choose: Stratum Spinosum, Epidermis, Stratum Lucidum, Arrestor pili muscle, Sensory nerve fiber, lamellar ( Pacinian ) corpuscle, Hypodermis, Dermal Papillae, Hair root, Sebaceous (oil) gland , Stratum corneum, Hair follicle (between shaft and root), Hair shaft, Eccrine seat gland, Stratum granulosum, Tactile (Meissner's) corpuscle, Stratumbasale, Adipose tissue, Hair follicle receptor, Dermis

Responsible for detecting pain when hair is pulled. O keratinocytes O root hair plexus O hair matrix O arrector pili muscle

discuss some theories of the purposes served by variouskinds of hair; and