In gross anatomy, how many insertion points can a skeletal muscle have?

• A. Only one insertion point
• B. One or more insertion points
• C. Exactly two insertion points
• D. Only muscles with more than one head can have an insertion

Answer: (B)

Verified step by step guidance

1. Understand the definition of an insertion point in skeletal muscle anatomy: it is the site where the muscle attaches to the bone or structure that moves when the muscle contracts.
2. Recall that a skeletal muscle can have one or multiple insertion points depending on its structure and function, as muscles can split or have multiple tendons attaching to different bones or parts of a bone.
3. Recognize that the number of insertion points is not strictly limited to one or two; some muscles have a single insertion, while others have multiple insertions to facilitate complex movements.
4. Note that the number of muscle heads (origins) does not necessarily determine the number of insertion points; a muscle with multiple heads can still have one or multiple insertions, and vice versa.
5. Conclude that the most accurate answer is that a skeletal muscle can have one or more insertion points, reflecting the variability in muscle anatomy.