Involuntary contractions of the muscles, classically the long muscles associated with standing (the anti-gravity muscles).
hair muscles yes you do have them
No, the buttock is not an organ. It is a collection of muscles, fat, and skin located on the backside of the body.
arrector pili.
Lactic acid is associated with muscles experiencing lack of oxygen, which can occur during intense exercise or when the muscles are not receiving enough oxygen to produce energy aerobically. This buildup of lactic acid can contribute to muscle fatigue and soreness.
Pulled Muscles Sprains Contusions
muscular system
hamstring
Muscles are used.
The spinal cord is not a bone, it is a collection on nerves connecting the muscles of most of the body to the brain
they are associated with intracellular digestion and donot possess muscle tissue
the dorsal vessel