Explain each of these familiar phenomena in terms of what you learned in this chapter:
a. Pimples
b. Dandruff
c. Greasy hair and 'shiny nose
d. Stretch marks from gaining weight
e. Freckles

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

Dendritic cells are phagocytes of the immune system that protect the skin and deeper tissues from invasion by pathogens.

Which of the following statements is false?

a. Thin skin lacks the stratum lucidum, whereas thick skin has all five epidermal layers.

b. Thick skin is located on the palms, the palmar surfaces of the fingers, the soles of the feet, and the plantar surface of the toes, whereas thin skin is located everywhere else.

c. Thick skin has numerous hairs, whereas thin skin lacks hairs.

d. Thin skin has a thin stratum corneum, and the other layers are thinner than what we find in thick skin.

What are the functions of the dermal papillae?

Which of the following is not an epidermal derivative?

a. Hair

b. Sweat gland

c. Sensory receptor

d. Sebaceous gland.

Mrs. Gaucher received second-degree burns on her abdomen when she dropped a kettle of boiling water. She asked her doctor (worriedly) if she would need a skin graft. What do you think he told her?

Another feature of CIPA is anhidrosis, or the inability to sweat. Explain why Maria's inability to produce sweat could potentially be life-threatening.

From what types of damage does the skin protect the body?

Mr. Grayson is receiving a drug treatment transdermally (through the skin). Explain why drugs delivered by this route are fat-soluble rather than water-soluble.