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INTEGUMENTARY SYSTEM all Questions & answers solved 100% accurately with Complete Solution Graded A+ latest version
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INTEGUMENTARY SYSTEM all Questions & answers solved 100% accurately with Complete Solution Graded A+ latest version

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  • July 5, 2024
  • 10
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers

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  • integumentary system all questions answers solve

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INTEGUMENTARY SYSTEM
✅
skin-

epidermis- ✅ the outer layer of the skin covering the exterior body surface
of vertebrates

dermis- ✅ the deep vascular inner layer of the skin
hypodermis-✅ layer of cells that secretes the chitinous cuticle

integument-✅ meaning covering

skin, hair, nails, glands-✅ components of the integumentary system

functions of integumentary system-✅ protection, sensation, temp
regulation, excretion, vitamin D protection

epidermis of the finger-✅
✅
dermis of the finger-

epipdermis- ✅1st major skin region (outside) Composed of stratified
squamous epithelium

keratinization-✅ process in which new cells (with keratin) push old cells to
surface
40-56 days for new cells to reach surface

strata of the epidermis-✅ (from most superficial to deep) stratum corneum
stratum lucidum stratum granulosum stratum spinosum stratum basale

stratum corneum- ✅ outermost layer of epidermis
20-30 layers of dead squamous cells filled with keratin

, accounts for 75% of epidermal thickness
Provides protection to deeper tissues from mechanical injury, inward or
outward diffusion of water & other molecules and invasion of
microorganisms

dandrufff-✅ excessive sloughing of s. corneum
✅ forms when stratum corneum has frequent friction
callus-

corn-✅ thickened s. corneum over bony bony prominences

stratum lucidum-✅ translucent and allowing light to pass through it easily
Absent in thin skin

stratum granulosum- ✅contains flattened cells pushed up from the deeper
strata
cells form protein granules
when cells leave this stratum, cells have died

stratum spinosum- ✅ multilayer of distorted (spined) cells
cells look spiny

stratum basale- ✅ deepest stratum of the epidermis
single sheet of columnar cells that continue to divide
firmly attached to dermis

Stratum Germinativum- ✅ S. spinosum + S. basale
epidermis- ✅
dermis- ✅
dermal papillae- ✅
duct of merocrine sweat gland- ✅

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