Read the following statements comparing endocrine and exocri

Read the following statements comparing endocrine and exocrine structures and identify the THREE which are false. ______ Endocrine cells are secretory: exocrine cells are not. ______ Endocrine glands deposit into the bloodstream; exocrine glands do not. ______ Endocrine secretions have regulatory targets; exocrine secretions do not. ______ Exocrine cells are components of several systems; endocrine cells are associated with just one. ______ Exocrine cells produce serous and/or mucous secretions; endocrine cells produce neither. ______ Exocrine glands deposit into extracellular areas; endocrine glands deposit into intracellular areas. ______ Exocrine glands have ducts; endocrine glands do not. ______ Exocrine structures \"excrete\"; endocrine structures \"secrete\". ______ Both endocrine and exocrine glands are composed of epithelial cells. ______ It is possible for a structure to be classified as both an endocrine gland and an exocrine gland.

Solution

The following three statements are false:

1. Endocrine cells are secretory. Exocrine cells are not.
Both endocrine and exocrine cells are secretory in nature.

2. Endocrine secretions ahve a regulatory target. Exocrine cells do not.
Both endocrine and exocrine glands can have a regulatoy target.

3. Exocrine cells are components of several systems; endocrine cells are associated with just one.
Endocrine cells are actually associated with different systems. Exocrine cells may or may not form components of several systems.