Sphincter Muscle Here

Anatomy, Abdomen and Pelvis, Sphincter Urethrae - StatPearls - NCBI

While they are found throughout the body—even in microscopic locations like blood vessels—a few play particularly critical roles: sphincter muscle

Composed of striated (skeletal) muscle, these are under your conscious control. These are the muscles you "squeeze" to hold back urine or a bowel movement until you reach a restroom. Major Sphincters in the Human Body Anatomy, Abdomen and Pelvis, Sphincter Urethrae - StatPearls