Which muscle type is not listed as a separate type by the CFDA?

• A. Skeletal
• B. Cardiac
• C. Striated
• D. Non-striated

Answer: (B)

The selection of the answer centers on the classification systems established by the CFDA (Cosmetics, Food, and Drug Administration) concerning muscle types relevant to the body. Looking at the options, it is essential to understand that while skeletal and cardiac muscles are distinctly categorized in medical descriptions, striated and non-striated terms are more descriptive phrases that can encompass multiple types of muscle.

Skeletal and cardiac muscles are categorized as separate, distinct types due to their structural and functional differences. Skeletal muscles are voluntary muscles attached to the skeleton, while cardiac muscle is involuntary and forms the heart. Non-striated typically refers to smooth muscles, which are also involuntary and found in various internal organs.

In contrast, the term striated describes the appearance of muscle fibers (i.e., having stripes or bands) found primarily in skeletal and cardiac muscles. However, these fibers are not defined as separate muscle types by the CFDA; rather, they describe the texture of specific muscle types. Thus, the only option that does not reflect a specific muscle type recognized independently by the CFDA is cardiac muscle.