Slot 3.40 - Thick skin A = epidermis B = dermis P = Pacinian corpuscle Arrows = sweat glands Papillary layer of dermis Stratum corneum Sweat gland duct.

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Presentation transcript:

Slot Thick skin A = epidermis B = dermis P = Pacinian corpuscle Arrows = sweat glands Papillary layer of dermis Stratum corneum Sweat gland duct Arrows = stratum granulosum Stratum germinativum

Slot Nail sections (Note: nail plate and nail bed)

Slot Hair follicle (c.s.)

Slot Hair follicle sections M = medulla; C = cortex; HC & RC = cuticle; He & Hu = internal root sheath; T&P = external root sheath; G, 1&2 = dermal root sheath` M = matrix; HR = hair root; P = dermal papilla; I&O = int &ext root sheaths; D = dermal root sheath

Slot Sebaceous gland Arrows = basal cells (equivalent of stratum germinativum)

Slot Sweat glands and myoepithelial cells Arrows = myoepithelial cells

Slot Lateral incisor tooth Periodontal membrane = dense regular CT

Slot Tooth (high power) D = dentin E = enamel C = cementum

Slot Odondoblast

Slot Ameloblast

Slot Tooth development Enamel organ 2  tooth bud Enamel Pulp Ameloblasts Odontoblasts OEE

Slot Thick skin Stratum corneum Stratum lucidum Stratum granulosum Stratum spinosum Stratum germinativum Papillary layer of dermis

Slot Thick skin Stratum corneum Stratum lucidum Stratum granulosum Stratum spinosum Stratum germinativum Papillary layer of dermis

Slot Thin skin (non-pigmented and pigmented) Note pigment in stratum germinativum Stratum corneum

Slot Fingernail Nail plate Nail bed Bone of finger

Slot Fingernail Nail plate Nail bed

Slot Hair follicle (l.s.) Hair matrix Dermal papilla External root sheath Internal root sheath

Slot Hair follicle (c.s.) Cortex External Root Sheath CT Sheath

Slot Hair follicle (l.s.) Medulla Cortex Cuticle Internal Root Sheath External Root Sheath CT Sheath

Slot Sebaceous gland

Slot Sweat gland

Slot Lip (vertical section) Vermilion Border Hair of Chinny-chin-chin

Slot Tooth (high power) Enamel Cementum Dentin

Slot Tooth (early development of enamel organ) Inner Enamel Epithelium Outer Enamel Epithelium Enamel Pulp

Slot Tooth (odontoblasts and dentin) Odontoblasts Dentin Mesenchyme

Slot Tooth (dentinal processes) Dentin Odontoblast processes

Slot Tooth (dentinal processes, c.s.) Odontoblast processes Dentin

Slot Tooth (periodontal membrane, cementum and alveolar bone) Dentin Cementum Periodontal membrane Alveolar bone

Slot 3.68 – Tooth buds (early enamel organs) Early tooth buds (enamel organ) Tongue

Slot Tooth development DentinEnamel

Slot Tooth development (enamel organ) Inner Enamel Epithelium (ameloblasts) Outer Enamel Epithelium Enamel Pulp

Slot Tooth development (later enamel organ) Enamel Ameloblasts Dentin Odontoblasts Odontoblast processes

Slot Pacinian corpuscle (pressure receptors)

Slot Pacinian corpuscle (pressure receptors) Nerve endings Modified Schwann cells

Slot Pacinian corpuscle (c.s.) Nerve endings Modified Schwann cells

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