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HOMEOSTASIS

HOMEOSTASIS. THE HUMAN ORGANISM. Biological Organization is Based on Structure. Natural organization is based on a system of increasing complexity: Cells Tissues Organs Organ Systems. BIOLOGICAL ORGANIZATION. Tissues join together Organs work together Goal of the organism is to.

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HOMEOSTASIS

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  1. HOMEOSTASIS THE HUMAN ORGANISM

  2. Biological Organization is Based on Structure Natural organization is based on a system of increasing complexity: • Cells • Tissues • Organs • Organ Systems

  3. BIOLOGICAL ORGANIZATION • Tissues join together • Organs work together • Goal of the organism is to

  4. HOMEOSTASIS • Homeostasis: • Homeo = • Stasis =

  5. HOMEOSTASIS • Required Components: • Stimulus • Receptor(s) • Afferent pathway • Control center • Efferent pathway • Effector

  6. HOMEOSTASIS • Homeostasis is Maintained

  7. HOMEOSTATIC IMBALANCE • Disturbance of homeostasis is the underlying cause of many human diseases

  8. ANATOMICAL POSITION

  9. DIRECTIONAL TERMS • Superior & Inferior • Anterior & Posterior • Medial & Lateral

  10. DIRECTIONAL TERMS • Proximal & Distal • Superficial & Deep

  11. INTEGUMENTARY SYSTEM THE HUMAN ORGANISM

  12. FUNCTIONS OF THE INTEGUMENTARY SYSTEM • Protection: • Body Temperature Regulation: • Cutaneous Sensation:

  13. FUNCTIONS OF THE INTEGUMENTARY SYSTEM • Metabolic Functions: • Blood Reservoir: • Excretion:

  14. INTEGUMENT The Skin • Three Regions: • Epidermis • Dermis • Hypodermis

  15. EPIDERMIS Epidermis: • Composed of • Cell types include: • Exposed to external environment

  16. EPIDERMIS Cells of Epidermis: • Keratinocytes • Melanocytes • Langerhans’ Cells • Merkel Cells

  17. DERMIS Dermis: • Second major skin region • Also contains:

  18. HYPODERMIS Hypodermis:

  19. SKIN COLOR Three Pigments Contribute to Skin Color: • Melanin: • Carotene: • Hemoglobin:

  20. NAILS Nail: • Clear, protective covering on distal & dorsal surface of fingers & toes • Cells produced in nail matrix push out distally over nail bed

  21. HAIR Hair • Functions Include:

  22. HAIR Hair: • Made up of: • Shaft • Root

  23. HAIR LOSS • Alopecia: • True Baldness:

  24. SKIN CANCER • Three Major Types of Skin Cancer: • Basal Cell Carcinoma • Squamous Cell Carcinoma • Melanoma

  25. SKIN CANCER Basal Cell Carcinoma:

  26. SKIN CANCER Squamous Cell Carcinoma:

  27. SKIN CANCER Melanoma:

  28. SKIN CANCER Melanoma: • Melanomas have the following characteristics (ABCD rule) • A: Asymmetry: • B: Border: • C: Color: • D: Diameter:

  29. BURNS Levels of Severity: • First-Degree: • Second-Degree: • Third-Degree:

  30. BURNS Burns Considered Critical If:

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