Massachusetts Comprehensive Assessment System (MCAS) Biology Practice Test

What is the primary function of ligaments in the body?

1. To connect muscles to bones

2. To connect bones to other bones

3. To cushion the joints

4. To protect nerves

The correct answer is: To connect bones to other bones

Ligaments serve a crucial role in the skeletal system by connecting bones to other bones. This connection helps to stabilize joints and maintain the proper alignment of the skeletal structure, allowing for appropriate movement and support during various physical activities. By providing this support, ligaments contribute to the overall function of joints, preventing excessive movement that could lead to dislocations or other injuries. The other options refer to different structures and functions in the body. For instance, tendons, not ligaments, connect muscles to bones, playing a vital role in movement. Meanwhile, cushioning of joints is provided by cartilage, which absorbs shock during activities like walking or running. Additionally, nerves are typically safeguarded by specialized tissues, including the spine and surrounding protective layers, rather than being associated with the functions of ligaments.