Skin, lung, and blood vessel walls have which tissue characteristic in common?

• A. They all are composed primarily of elastic connective tissue.
• B. They all are made up of dense regular connective tissue.
• C. They all lack any epithelial tissue.
• D. They all contain stratified squamous epithelium.

Answer: (A)

Verified step by step guidance

1. Understand the question: The problem is asking about a common tissue characteristic shared by skin, lung, and blood vessel walls. This requires knowledge of tissue types and their functions in Anatomy & Physiology.
2. Review the options provided: The options include elastic connective tissue, dense regular connective tissue, absence of epithelial tissue, and presence of stratified squamous epithelium. Each option represents a specific tissue type or characteristic.
3. Analyze the function and structure of each organ: Skin primarily contains stratified squamous epithelium for protection. Lungs have elastic connective tissue to allow expansion and recoil during breathing. Blood vessel walls also contain elastic connective tissue to accommodate changes in blood pressure and flow.
4. Eliminate incorrect options: Dense regular connective tissue is found in tendons and ligaments, not in skin, lungs, or blood vessels. Epithelial tissue is present in skin and lungs, so the option stating they lack epithelial tissue is incorrect. Stratified squamous epithelium is present in skin but not in lungs or blood vessels.
5. Identify the correct answer: The common characteristic among skin, lung, and blood vessel walls is the presence of elastic connective tissue, which provides flexibility and resilience to these structures.