In adults, over 90% of all cancers are either adenomas (adenocarcinomas) or carcinomas. In fact, cancers of the skin, lung, colon, breast, and prostate are all in these categories. Which one of the four basic tissue types gives rise to most cancers? Why do you think this is so?

Identify the six types of epithelial tissue shown in the drawing below.

f. ___

Which of the following epithelia most easily permits diffusion?

(a) Stratified squamous

(b) Simple squamous

(c) Transitional

(d) Simple columnar

What are the four essential functions of epithelial tissue?

In adults, over 90% of all cancers arise in epithelium. Such cancers are called carcinomas, or adenomas (adenocarcinomas) if they arise in glandular epithelia. In fact, cancers of the skin, lung, colon, breast, and prostate are all in these categories. Why do you think this is so?

Why are there no skin cancers that originate from stratum corneum cells?

Most cancers develop in epithelial tissues. Which epithelial tissue characteristic makes them prone to cancer?

Together the basal lamina and the reticular lamina make up the _____________________. The basal lamina is produced by the _________________, while the reticular lamina is produced by the ____________________.