sisälihakset

Sisälihakset refers to the muscles located within body cavities, primarily the abdominal and pelvic regions. These muscles play a crucial role in supporting internal organs, maintaining posture, and facilitating essential bodily functions such as digestion, respiration, and elimination. Unlike skeletal muscles, which are under voluntary control, most intrinsic muscles are smooth muscles, meaning they contract involuntarily.

Within the abdominal cavity, the diaphragm is a key muscle of respiration, separating the chest from the abdomen. Other intrinsic muscles in this region contribute to the movement of food through the digestive tract, the expulsion of waste, and the stabilization of the torso. The abdominal wall muscles, while often considered external, also have deeper layers that contribute to the support and protection of abdominal organs.

In the pelvic region, the pelvic floor muscles form a supportive sling for organs like the bladder, uterus, and rectum. These muscles are vital for urinary and fecal continence, as well as sexual function. Their strength and function can be affected by factors such as childbirth, aging, and certain medical conditions.

The health and function of intrinsic muscles are essential for overall well-being. Issues affecting these muscles can lead to a range of problems, including incontinence, pelvic pain, and digestive disorders. Maintaining a healthy lifestyle, including appropriate exercise and nutrition, can help support the proper functioning of these vital internal muscles.