Integumentary System (skin, hair, nails)

Question 1

epidermis

Answer 1

-superficial, thinner layer, no blood vessels
-physical barrier protecting against mechanical abrasion, bacteria, dehydration, ultraviolet radiation
-obtains oxygen/nutrients from dermis
-temp. regulation + water retention

Question 2

dermis

Answer 2

-deeper, thicker layer
- contains specialized receptors + nerves that provide sensations (touch, pressure, temp, pain)
-contains capillaries + sweat glands to regulate body temp
-sebaceous (oil) glands, hair follicles, smooth muscle, pigment, immune cells

Question 3

hypodermis

Answer 3

subcutaneous tissue
-loose connective tissue + adipose tissue

Question 4

surgical procedures

Answer 4

-full thickness skin graft: taking skin graft (epidermis + dermis) from donor site
- split-thickness skin graft: taking skin graft (epidermis + superficial dermis)