Integumentary System Chapter # Bio 120

1. Integumentary System & Medical Terms By: Jessica Kontopoulos CHAPTER 3 Bio 120 Professor: R Abdullah

2. Skin A/K/A Integument or Cutaneous Membrane Largest organ in the body Layers: Epidermis, Dermis and Subcutaneous Functions: Protects Body Houses nerve receptors Secretes Fluids Regulate Temperature

3. Accessory Organs Sweat Glands- Cools body as sweat evaporates Sebaceous glands- Secrete sebum Hair – Provides protection with sensory receptors Nails- Cover and protects tips of digits

4. Medical Terminology Terms are formed by using a word root adding the combining form and a suffix. For example dermat/o (skin) and -logy (study of) forming dermatology.

5. Dermat/o = Skin Inflammation of the skin Dermatologist Dermat/o + -logist Dermatitis Dermat/o +-itis A Specialist in skin

6. Melan/o= Black A dangerous form of skin cancer caused by an overgrowth of melanin in a melanocyte. Special cells in the basal layer of the epidermis. They contain the black pigment melanin. Melanoma Melan/o + -oma Melanocyte Melan/o + -cyte

7. -derma- Skin Dry and scaly skin condition A/K/A vitiligo Disappearance of pigment from the skin in patches, causing a milk white appearance Ichthyoderma -derma + ichthy/o Leukoderma -derma + leuk/o

8. Onych/o=nail Softening of nails Surgical removal of the nail Onychomalacia Onych/o + malacia Onychectomy Onych/o + ectomy

9. Conclusion Learning medical terminology is like learning a foreign language When studying medical terms rather than memorizing it, it is easier to learn the word roots along with combining form and adding the appropriate suffix.