Chapter 5

Question 1

Keratinocytes

Answer 1

• Produce Keratin – fibrous protein that gives
  protective properties
• Most epidermal cells are keratinocytes

Question 2

Layers of the Epidermis

Answer 2

Stratum Basale
Stratum Spinosum
Stratum Granulosum - Process of keratinization begins
Stratum Lucidum (Clear Layer) - only in thick skin
Stratum Corneum

Question 3

Two layers of Dermis

Answer 3

• Papillary - Areolar connective tissue
• Reticular - Dense irregular connective tissue

Question 4

Three pigments contribute to skin color

Answer 4

Melanin, Carotene, Hemoglobin

Question 5

Clinical – Skin Conditions

Answer 5

– Erythema: indicate embarrassment, fever, inflammation or allergy
– Pallor: emotional stress, low blood pressure and
decreased ability of blood to carry oxygen
– Ecchymosis: blood vessel damage and blood leaking into surrounding tissue

Question 6

Sweat Glands: two main types + one other cutaneous gland

Answer 6

Eccrine (merocrine) - temp control
Apocrine - may act as sexual scent glands
Sebaceous gland (oil) - lube skin & hair

Question 7

The three major forms of skin cancer are

Answer 7

basal cell carcinoma - most common
squamous cell carcinoma - 2nd most common
melanoma - rare & deadly

Question 8

Burns

Answer 8

The immediate threat is dehydration and electrolyte
imbalance

Question 9

To evaluate burns, the Rule of Nines is used

Answer 9

Body is broken into 11 sections, with each
section representing 9% of body surface
* except genitals, which account for 1%
each arm 9%, each leg 18%, ant/pos trunk 36%, head + neck 9%