Integumentary system

Question 1

epidermis

Answer 1

outermost portion of skin; composed of closely packed, dead, keratin-filled squamous cells. chief mechanical barrier protecting the body. composed of stratum corneum, stratum lucidum, stratum granulosum, and stratum germinativum

Question 2

dermis

Answer 2

richly vascular connective tissue below epidermis. elastin, collagen, and reticular fibers provide resilience, strength, and stability, sensory nerve fibers indicate pain, touch, and temperature. autonomic motor nerves innervate blood vessels, glands, and arrector pili muscles.

Question 3

hypodermis

Answer 3

subcutaneous layer consisting of loose connective tissue filled with adipose. Generates heat, provides insulation, shock absorption, and a reserve of calories.

Question 4

information to collect from the health history before examining the integumentary system

Answer 4

Changes in skin and duration of changes
systemic problems, such as thyroid disorder, malnutrition, severe illness, etc
skin care habits
use of alcohol, tobacco, and recreational drugs

Question 5

Primary skin lesions

Answer 5

primary skin lesion: occurring from initial spontaneous manifestations of a pathologic process
macule, papule, patch, plaque, wheal, nodule, mass, vesicle, bulla, pustule, cyst

Question 6

Secondary skin lesions

Answer 6

secondary skin lesion: result from later evolution of or external trauma to a primary lesion
scale, lichenification, keloid, scar, excoriation, fissure, erosion, ulcer, crust