__________ membranes are made of connective tissue.

Question

BlackTom AI · Accepted Answer

Fibrous membranes consist primarily of connective tissue and are therefore the correct choice.

1) Relevant knowledge points and concepts
- Body membranes are classified as epithelial membranes (cutaneous, mucous, serous) and connective tissue membranes (commonly called fibrous or synovial/fibrous membranes).
- Epithelial membranes include both an epithelial layer and an underlying connective tissue layer. Connective tissue membranes are formed only of connective tissue (no true epithelial layer).
- Examples: cutaneous membrane = skin (epidermis: epithelium; dermis: connective tissue); mucous membranes (mucosae) = epithelium + lamina propria; serous membranes = mesothelium (simple squamous epithelium) + thin connective layer. Fibrous membranes include structures like periosteum, perichondrium, and some joint/synovial coverings, made mainly of dense connective tissue.

2) Step-by-step reasoning
- Examine each option for its tissue composition:
  - Fibrous: by definition are connective tissue membranes composed mainly of fibrous connective tissue.
  - Cutaneous: has a stratified squamous epithelial layer (epidermis), so not purely connective tissue.
  - Serous: has a mesothelial epithelial layer lining closed cavities, so it is epithelial+connective.
  - Mucous: lines cavities open to the exterior and contains epithelial cells that secrete mucus plus an underlying connective lamina propria.
- The only option that matches “made of connective tissue” alone is fibrous.

3) Calculations
- No numerical calculations are required; reasoning is categorical/anatomical.

4) Why the correct answer is correct
- Fibrous membranes are comprised largely of dense connective tissue fibers and cells and lack an epithelial covering, matching the prompt’s requirement that the membrane be made of connective tissue.

5) Why the other options are incorrect
- Cutaneous, serous, and mucous membranes all include epithelial layers and therefore are epithelial membranes, not solely connective tissue membranes.

6) Conclusion
- Therefore, the correct answer is Fibrous, which matches the provided answer.

__________ membranes are made of connective tissue.Single choice

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