The peroneus longus muscle (or fibularis longus) is a major mover and stabilizer of your foot and ankle. The muscle runs down ...

Muscle twitches fall into two main types. There’s myoclonus, where a whole muscle or group of muscles twitch or spasm. Then ...

Medically reviewed by Jennifer Steinhoff, MD Key Takeaways The lumbar spine includes five vertebrae that help with mobility and stability.Lumbar vertebrae are larger because they carry the load from ...

- Muscle cells, also known as myocytes, are specialized cells designed for contraction and force production. Skeletal Muscle Cells: These cells are long, cylindrical, and have a striated (or striped) ...

Neck muscles have an essential role in supporting and stabilizing your neck. More than 20 muscles are working to keep your head supported and moving. Your neck muscles have a range of responsibilities ...

Much like their name implies, the quadricep muscles were once thought to be a set of four muscles, with the name “quad” translating to “four or fourth” in Latin. However, it has since been discovered ...

Muscle function loss occurs when your muscles don’t work or move normally. Complete muscle function loss, or paralysis, involves being unable to contract your muscles normally. If your muscles lose ...

How often and effectively are you training your back muscles? Far too often, we neglect how much love our back muscles need and deserve in the gym in favor of the muscles we can see in the mirror. We ...

Infectious agents can cause muscle twitching and spasms, too. The most commonly known is probably tetanus, which causes a phenomenon called lockjaw, where the neck and jaw muscles contract to the ...