2.6

Question 1

________ -degree burns are lesions caused by heat, friction, or other agents.

1. Damage is limited to the superficial layers of the epithelium (usually the epidermis of the skin).
2. Redness and edema occur, but blisters do not form.
   a. Mitotically active cells remain viable in the deeper layers of the epidermis.
   b. They divide and replace the damaged or destroyed cells.

Answer 1

First

Question 2

_____________ is an autoimmune disease in which antibodies against hemidesmosomes are produced.

1. This disease is characterized by chronic generalized blisters in the skin.
2. These blisters cause the epithelium to separate from the underlying substratum.

Answer 2

Bullous pemphigoid

Question 3

_____________________________ results from a genetic defect that causes an abnormal ciliary beat or the absence of a beat.

1. In this syndrome, cilia have axonemes that lack ciliary dynein arms and have other abnormalities.
2. The syndrome is associated with recurrent lower respiratory tract infections and reduced fertility in women and sterility in men.

Answer 3

Immotile cilia syndrome

Question 4

Epithelia sometimes undergo __________ in response to persistent injury. This is the conversion of one type of differentiated epithelium into another.

Answer 4

Metaplasia

Question 5

______________are malignant tumors that arise from surface epithelia.

Answer 5

Carcinomas

Question 6

______________ are malignant tumors that arise from glands.

Answer 6

Adenocarcinomas