HISTO SKIN

• Attached uncovered portion of the nail?

  Body
• Anterior unattached extension of the body?

  Free edge
• Proximal part of nail which is whitish?

  Lunula
• Fold of the skin which extends around the proximal and lateral borders of the nail?

  Nail Fold
• Stratum corneum that turns into the nail groove extends over upper surface of the nail roots continues short distance unto the surface?

  Eponychium
• Stratum corneum of the skin beneath the free edge of the nail?

  Hyponichium
• Helps regeneration of body temperature?

  Melanin
• Most extensive sense organ of the body for the reception of tactile, thermal?

  Skin
• Absent in the forehead, external ear, perineum and scrotum?

  Epidermal ridges
• Configurations of medical and legal interest?

  Dermatoglyphics
• Keratin forming cells?

  Keratinocyte
• Develop elsewhere and layer migrates to epidermis?

  Melanocytes
• Worn out or defective melanocytes, form of phagocytes of bone marrow origin; function in the processing of Ag; macrophage residing in epithelium primary immune response?

  Langerhan cells
• Associated with axons, contain lobulated nucleus and characteristic electron-dense cytoplasmic granules?

  Merkel cells
• Produced by melanocytes?

  Melanin
• Inability of melanocytes to form pigmented melanosomes?

  Albinism
• Amount of melanin concentrated primarily w/in stratum basale and in membrane band melanosome complexes?

  Caucasians
• More resistant to chemical and physical trauma?

  Pigmented Skin
• Caused by the complete absence or decrease of melanin biosynthesis in melanocytes?

  Autosomal recessive disease
• Simple layer of columnar cells (keratinocytes)?

  Stratum basale
• At the lateral and upper surface of the cells and serve to bind cells together?

  Desmosomes
• Prickle cell layer?

  Stratum spinosum
• Consists of keratinocytes of polyhedral shapes?

  Stratum spinosum
• What is the mitotic figures of stratum spinosum?

  Prophase and metaphase
• has keratohyaline granules?

  Stratum granulosum
• Containing amino acids, serving as the precursors of the amorphous portion of the extensive filament matrix complex of stratum corneum?

  Rich in proline and sulfur
• Thin lightly staining section with a wavy stripe and few layers of compacted flatted cells? has clear layer and translucent appearance?

  Stratum Lucidum
• Flattened or squamous and the outermost layer consist of cornified closely packed cells, devoid of nucleus, cytoplasm replaced with keratin?

  Stratum corneum
• Resulting from thickening of the stratum corneum in response to chronic wear and friction?

  Callous Formation
• A sheath of protection to the highly sensitive skin, situated beneath it?

  Cutis vera
• Loops of capillary blood vessels?

  Papillae
• Extensive to nourish the epidermis?

  Capillary Bed
• The main fibrous layer?

  Dermis
• Composition of dermal tissue?

  Ground substance, connective tissue cells, Connective tissue fibers, lymphatics and nerves
• Comes from the epidermis and help maintain the body's homeostasis?

  Skin appendages
• Eccrine (merocrine type), exocystosis and stimulus is heat?

  Sweat glands
• Almost all over the body and has pilo sebaceous that is "the unit of organ, simple branched"?

  Sebaceous glands
• The fusion of secretary vesicles w the plasma membrane?

  Exocystosis
• Only found in 3 places: armpit and anal-genital area, and usually end at the hair follicles and a little oil is produced?

  Apocrine Sweat Glands