Which epidermal layers contain dead, flattened keratinocytes?

Count Dracula, the most famous vampire, rumored to have killed at least 200,000 people, was based on a real person who lived in eastern Europe about 600 years ago. He was indeed a “monster,” although he was not a real vampire. The historical Count Dracula may have suffered from which of the following?

(a) Porphyria

(b) EB

(c) Halitosis

(d) Vitiligo

Explain your answer.

Which of the epidermal layers is likely to have the greatest regenerative capacity (ability to divide)?

Which of the following layers of the epidermis is responsible for generating new epidermal cells?

Which of the following is true about thick skin?

Why do the cells in the more superficial layers of the epidermis die?

The disease pemphigus vulgaris involves a patient's own immune system attacking the desmosomes between the epithelial cells of the skin. What changes would you expect to see with this disease?

Number the strata of thick skin epidermis from deepest (1) to most superficial (5). 

____Stratum spinosum     

____Stratum corneum     

____Stratum basale     

____Stratum lucidum     

____Stratum granulosum

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.