Receptors of Integumentary System Merkel cell – Light touch receptor— Braille Slow adapting receptor Meissner’s Dermoepidermal junction Rapidly adapting 2-point discrimination Pacinian Deep dermis, rapidly adapting Pressure & vibration Ruffini’s Slowly adapting Dermal stretch & thermal receptor Free nerve endings Non myelinated, pain & temperature
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Integumentary System DEVELOPMENT OF SKIN: Epidermis & its appendages, pilo sebaceous unit, nail & sweat glands: Surface ectoderm Melanocyte Et Merkel cells: Neural crest Langerhan’s cells: Bone marrow Dermis in limbs & trunks: Somatopleuric mesenchyme Dermis in face, Head Et neck: Neural crest Skin and facia of great toe drains into Vertical group of superficial inguinal
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Integumentary System Q. 1 The portion of the skin that serves as a barrier to water loss is the: A Dermis B Subcutaneous tissue C Deep fascia D Epidermis Q. 1 The portion of the skin that serves as a barrier to water loss is the: A Dermis B Subcutaneous tissue C Deep fascia D
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