The prostate gland sits deep inside the male pelvis, tucked between the bladder and the pelvic floor. It does not float in space. A complex network of muscles surrounds it, supports it, and helps it do its job. Understanding which muscles surround the prostate gland is useful for anyone trying to make sense of pelvic pain, urinary issues, or pelvic floor therapy.
What Muscles Surround the Prostate Gland Diagram? What to Know
The muscles that surround the prostate gland include the levator ani muscles, the deep and superficial transverse perineal muscles, the bulbospongiosus muscle, and the external urethral sphincter. The levator ani is the largest and most important group. These muscles form a supportive hammock-like sheet beneath the pelvic organs, and the prostate rests directly on top of them.
Above the prostate, the detrusor muscle of the bladder connects to the prostate’s base. Behind it, the rectum and its muscular wall sit close by. The puborectalis muscle, part of the levator ani, wraps around the rectum and pulls it forward, creating a sling that also supports the prostate from behind.
When people search for a diagram of these muscles, they are usually trying to understand pelvic floor anatomy. A good diagram shows the prostate sitting above the pelvic floor muscles, with the urethra passing through them. The prostate itself contains smooth muscle fibers within its own capsule, but the skeletal muscles around it are what most people mean when they ask about surrounding muscles.
Why the Pelvic Floor Muscles Matter for Prostate Health
The pelvic floor muscles do more than hold organs in place. They contract and relax in coordination with the bladder and bowel. When these muscles are too tight, too weak, or uncoordinated, symptoms can appear in the prostate area even when the prostate itself is healthy.
Men with chronic pelvic pain syndrome often have tense, tender pelvic floor muscles. This condition causes pain in the perineum, the area between the scrotum and anus, which is exactly where the muscles surrounding the prostate are located. Some research suggests that pelvic floor physical therapy can reduce this type of pain, though results vary from person to person.
The levator ani muscles also play a role in urinary control. They work with the external urethral sphincter to stop the flow of urine. After prostate surgery, these muscles may be weakened, which is why pelvic floor exercises are commonly recommended during recovery.
The Levator Ani: The Main Support Structure
The levator ani is the primary muscle group supporting the prostate. It is made up of three parts: the puborectalis, the pubococcygeus, and the iliococcygeus. Together, these muscles form the pelvic diaphragm, a broad sheet that spans the bottom of the pelvis.
The puborectalis is the most relevant to prostate anatomy. It forms a U-shaped sling around the rectum, just behind the prostate. This sling keeps the rectum angled forward and provides a shelf for the prostate to rest against. When the puborectalis is tense, it can press against the prostate and contribute to discomfort.
The pubococcygeus runs from the pubic bone to the tailbone, passing beneath the prostate. The iliococcygeus sits further back and is less directly involved with the prostate. All three muscles work together during coughing, lifting, and other activities that increase abdominal pressure.
Weakness in the levator ani can contribute to pelvic organ prolapse, though this is far more common in women. In men, levator ani weakness is more often associated with urinary incontinence, especially after prostate surgery.
The External Urethral Sphincter and Urinary Control
The external urethral sphincter is a ring of skeletal muscle that wraps around the urethra just below the prostate. This is the muscle men consciously control when they stop urinating midstream. It is distinct from the internal urethral sphincter, which is made of smooth muscle and operates automatically.
During prostate surgery, the external urethral sphincter must be preserved to maintain urinary continence. Surgeons work carefully to spare this muscle. When it is damaged or weakened, men may experience stress incontinence, meaning urine leaks with coughing, sneezing, or lifting.
The external urethral sphincter works in coordination with the levator ani. Both muscles receive signals from the pudendal nerve, which originates in the sacral spinal cord. Pelvic floor exercises strengthen both muscles together, which is why they are effective for post-surgical incontinence.
The Bulbospongiosus and Transverse Perineal Muscles
The bulbospongiosus muscle covers the bulb of the penis, which sits just below the prostate. This muscle helps empty the urethra after urination and contributes to ejaculation. It contracts rhythmically during ejaculation to propel semen through the urethra.
The transverse perineal muscles run horizontally across the perineum. There is a deep pair and a superficial pair. These muscles stabilize the pelvic floor and support the structures passing through it. They are smaller than the levator ani but still relevant to prostate anatomy.
Together, the bulbospongiosus and transverse perineal muscles form part of the superficial pelvic floor layer. This layer sits below the levator ani and is closer to the skin. Physical therapists often target these muscles during manual therapy for pelvic pain.
How Muscle Tension Affects the Prostate
Muscle tension around the prostate can cause symptoms that feel like prostate problems. Men may experience a frequent urge to urinate, pain during urination, or discomfort in the perineum. These symptoms can occur even when the prostate is not enlarged and no infection is present.
Chronic tension in the pelvic floor muscles can also affect bowel function. The puborectalis muscle must relax for a bowel movement to occur. If it stays tight, men may experience constipation or a sensation of incomplete emptying.
This is why doctors sometimes recommend pelvic floor relaxation techniques for men with chronic pelvic pain. Biofeedback, diaphragmatic breathing, and targeted stretching can help reduce muscle tension. Some men find significant relief from these approaches, though the evidence base is still developing.
It is important to note that prostate conditions and pelvic floor muscle problems can coexist. An enlarged prostate can cause urinary symptoms, and so can tense pelvic floor muscles. A urologist can help determine which issue is driving the symptoms, or whether both are contributing.
Pelvic Floor Exercises After Prostate Surgery
After prostate removal, urinary incontinence is a common concern. The muscles that surround the prostate area must take over the job of urinary control. Pelvic floor exercises, sometimes called Kegel exercises, are the standard approach to rebuilding this strength.
To perform a pelvic floor contraction, a man should squeeze the muscles used to stop urine flow or hold in gas. The contraction should be held for several seconds, followed by a full relaxation. Repeating this pattern multiple times per day can strengthen the levator ani and external urethral sphincter over time.
Research consistently shows that men who do pelvic floor exercises before and after prostate surgery regain continence faster than those who do not. However, doing the exercises correctly matters. Many men contract the wrong muscles, such as the abdominal or gluteal muscles, without engaging the pelvic floor.
Working with a pelvic floor physical therapist can help ensure the exercises are done properly. These specialists use biofeedback or electrical stimulation to help men identify and strengthen the correct muscles. Some clinicians recommend starting these exercises before surgery as a preventive measure, though the evidence for this approach is mixed.
When to See a Doctor
Pelvic floor muscle problems can cause real symptoms, but they are not the only cause of pelvic or urinary issues. Men should see a doctor for any new or worsening urinary symptoms, pain, or blood in the urine or semen. These symptoms require proper evaluation to rule out prostate cancer, infection, or other conditions.
A doctor can perform a digital rectal exam to assess the prostate. This exam also allows the doctor to feel the tone of the pelvic floor muscles. An overly tight or tender pelvic floor can be identified this way, which helps guide treatment.
If pelvic floor muscle dysfunction is suspected, a referral to a pelvic floor physical therapist may be appropriate. These therapists are specially trained to evaluate and treat muscle issues in the pelvic region. They can provide a personalized exercise program and manual therapy techniques.
Frequently Asked Questions
What is the main muscle under the prostate?
The levator ani muscle group, particularly the puborectalis portion, forms the main support beneath the prostate. This broad muscle sheet spans the bottom of the pelvis and holds the prostate in place.
Can tight pelvic floor muscles cause prostate symptoms?
Yes, tense pelvic floor muscles can cause urinary urgency, frequency, and pelvic pain that mimic prostate problems. These symptoms can occur even when the prostate itself is completely healthy.
Do Kegel exercises help men with prostate issues?
Kegel exercises strengthen the pelvic floor muscles and are most effective for urinary incontinence after prostate surgery. They may also help men with chronic pelvic pain, though the evidence for pain relief is less consistent.
How can I tell if I am doing Kegel exercises correctly?
You should feel a lifting and squeezing sensation in the area between the scrotum and anus, without tightening your abdomen or buttocks. A pelvic floor physical therapist can confirm you are using the correct muscles.
