Question

question which of the following statements about epithelial tissues are correct? select all that apply they form glands. they contain a matrix. they are avascular. they provide physical protection.

Explanation:

1. "They form glands": Epithelial tissues can specialize to form glands (e.g., exocrine and endocrine glands), so this is correct.
2. "They contain a matrix": Connective tissues (not epithelial) have a matrix; epithelial tissues are tightly packed cells with little extracellular material, so this is incorrect.
3. "They are avascular": Epithelial tissues lack blood vessels (avascular), relying on diffusion from underlying tissues for nutrients, so this is correct.
4. "They provide physical protection": Epithelial tissues (e.g., skin, lining of organs) act as a physical barrier, so this is correct.

Answer:

• They form glands.
• They are avascular.
• They provide physical protection.