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Integument
Functions
► Protection
► Body
Regulation
► Vitamin D Synthesis
► Sensory Receptors
► Excretory
Epidermis
► Keratinocytes
► Melanocytes
► Langerhans
► Merkel
Cells
Cells
Epidermal Layers
► Stratum
Basale/Germativum (basal layer)
► Stratum
Spinosum (spiny layer)
► Stratum
Granulosum (granular layer)
► Stratum
Lucidum (clear layer)
► Stratum
Corneum (horny layer)
Thick Skin
Dermis
► Papillary
Region
 Dermal Papillae
 Meissner’s Corpuscles
► Reticular
Layer
 Pacinian Corpuscles
 Other structures
► Hypodermis
Accessory Structures of the Skin
► Glands
 Sudoriferous
►Eccrine
(Merocrine)
►Aprocrine
►Modified
 Ceruminous
 Mammary
 Sebaceous
Hair and Hair Follicles
 Protect and insulate
 Two sections
►Shaft
►Root




(enclosed in Hair Follicle)
Follicle
Papilla
Matrix
Arrector Pili Muscles
Bone Tissue and
Cartilage
Classifications of Bones
► Long
► Short
► Flat
► Irregular
► Sesamoid
Gross Features of Long Bones
► Epiphyses
 Epiphyseal Plate/Line
► Diaphysis
► Red
Marrow
► Articular Cartilage
► Periosteum
► Medullary Cavity
► Endosteum
► Yellow Marrow
► Osteoblasts/Osteoclasts
Microscopic Structure of Bone
► Compact
Bone
 Osteons
 Haversian canal
 Volkmann canals
Osteons in Compact Bone
► Concentric
Lamellae
► Canaliculi
► Lacunae
► Osteocytes
► Spongy
(Cancellous) Bone




Trabeculae
Red Marrow
Needs Protection
Location
► http://www.youtube.com/watch?v=GIy2nM
nuGGI
► http://www.nlm.nih.gov/medlineplus/ency/a
rticle/003009.htm
► http://www.cancer.gov/cancertopics/unders
tandingcancer/StemCells/Slide2
Chemical Composition of Bone
► Properties
of osseous tissue are
determined by its extracellular
matrix
 25% Water
 25% protein fibers
 50% mineral salts
► Collagen
fibers
► Mineral Salts
Cartilage
► Oval
lacunae with chondrocytes
► Pericondrium
► Non-living matrix
► Types
 Hyaline
 Elastic
 Fibrocartilage
 Pg. 118