External Anal Sphincter
Anatomical Info
-
Position:
Anteroir -
Region:
Pelvis -
Plane:
Frontal
Muscle Characteristics:
-
Movement:
Flexion -
Muscle Shape:
Circular
Nerve:
Nerve
System
Spinal Plexus
Division
Trunk
Branch
Roots
Description
The external anal sphincter muscle is a circular muscle located around the anus. It is composed of two layers: the outer involuntary layer and the inner voluntary layer. The external anal sphincter muscle is innervated by the pudendal nerve.
The main function of the external anal sphincter muscle is to control the release of feces from the rectum. It does this by contracting and relaxing to regulate the opening and closing of the anus. The external anal sphincter muscle also plays a role in maintaining continence and preventing the involuntary loss of feces.
- Continence refers to the ability to control the release of urine and feces from the body. It is the opposite of incontinence, which is the inability to control the release of urine and feces. Continence is an important aspect of overall urinary and gastrointestinal health, and the muscles involved in maintaining continence, including the external anal sphincter muscle, play a crucial role in this process.
The external anal sphincter muscle is commonly used in activities that involve the release of feces, such as defecation. It is also used in activities that require maintaining continence, such as running or jumping.
In sports, the external anal sphincter muscle may be used in activities that involve intense physical exertion, such as long-distance running or weightlifting. It may also be used in activities that require maintaining continence, such as gymnastics or dancing.
Targeted Muscle Exercises
Muscle Engaging Sports
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