At which level of organization is the skin classified in the human body?

• A. Organism
• B. Cellular
• C. Tissue
• D. Organ

Answer: (D)

Verified step by step guidance

1. Understand the levels of organization in the human body: The human body is organized into several hierarchical levels, starting from the smallest unit (cellular level) to the largest (organism level). These levels include cellular, tissue, organ, organ system, and organism.
2. Define the organ level: An organ is a structure composed of multiple tissue types working together to perform specific functions. Organs are more complex than tissues and are integral to the body's systems.
3. Identify the composition of the skin: The skin is made up of multiple tissue types, including epithelial tissue, connective tissue, and nervous tissue, which work together to protect the body, regulate temperature, and provide sensory information.
4. Classify the skin based on its complexity: Since the skin is composed of multiple tissue types working together to perform specific functions, it is classified at the organ level of organization.
5. Confirm the classification: The skin is the largest organ in the human body, further supporting its classification at the organ level rather than cellular, tissue, or organism levels.