You’ve probably heard someone say “strengthen your pelvic floor” or “do your Kegels.” But when a doctor or physical therapist says “pelvic floor,” most women picture something vague, somewhere down there. That’s not your fault. Nobody teaches pelvic floor anatomy in health class.

Here’s why it matters: you can’t take care of muscles you don’t understand. And the muscles of the pelvic floor control things you rely on every single day, from bladder control to sexual function to core stability. When these muscles aren’t working properly, the symptoms can be confusing, frustrating, and isolating.

This guide breaks down the pelvic floor anatomy in plain language. No medical degree required. By the end, you’ll understand which muscles make up your pelvic floor, what each one does, and how to tell when something isn’t working the way it should.

What Is the Pelvic Floor?

The pelvic floor is a group of muscles, ligaments, and connective tissue that sits at the base of your pelvis. Picture a bowl-shaped sling stretching from your pubic bone at the front to your tailbone at the back, and from one sit bone to the other side-to-side.

This muscular sling has three openings in women: the urethra, the vagina, and the anus. The muscles of the pelvic floor wrap around these openings and control them. When the muscles contract, the openings close. When they relax, the openings release.

Think of it as the foundation of a house. Everything above it, your core, your spine, your organs, depends on that foundation being stable. When the foundation shifts, you feel it everywhere.

The Three Layers of Pelvic Floor Muscles

Most people think of the pelvic floor as a single muscle. It’s actually three distinct layers of pelvic floor anatomy, each with a different job. Understanding these layers helps explain why pelvic floor problems can show up in so many different ways.

Layer 1: The Superficial Perineal Layer

This is the outermost layer, closest to the skin. It includes:

• Bulbospongiosus: Surrounds the vaginal opening. Plays a role in sexual arousal and function. Also helps with urinary control.
• Ischiocavernosus: Runs along the sides of the vaginal opening. Contributes to clitoral erection and sexual response.
• External anal sphincter: Controls the closing of the anus. Essential for bowel continence.
• Transverse perineal muscles: Stretch between the sit bones and provide structural support to the perineum, the area between the vaginal opening and the anus.

This layer is the most vulnerable during childbirth. Tearing or episiotomy during vaginal delivery directly affects these muscles, which is why postpartum symptoms like pain during intercourse or difficulty with bowel control often trace back to this layer.

Layer 2: The Urogenital Diaphragm

The middle layer sits deeper and provides additional support:

• Compressor urethrae: Wraps around the urethra and helps maintain urinary continence, especially during moments of increased pressure like coughing or sneezing.
• Sphincter urethrovaginalis: Surrounds both the urethra and vagina. Works with the compressor urethrae to prevent leaking.
• Deep transverse perineal muscle: Provides structural support and stability to the mid-pelvis.

This layer is your backup system for bladder control. When the deeper muscles (layer 3) can’t handle a sudden cough or sneeze, this layer kicks in to prevent leaking. Weakness here is a common contributor to stress urinary incontinence.

Layer 3: The Pelvic Diaphragm (Levator Ani)

This is the deepest, largest, and most important layer. The levator ani is the muscle group that most people mean when they say “pelvic floor.” It includes three muscles:

• Pubococcygeus (PC muscle): Runs from the pubic bone to the coccyx (tailbone). Supports the bladder, uterus, and rectum. This is the primary muscle you engage during a Kegel exercise.
• Puborectalis: Forms a sling around the rectum. Creates the angle that maintains bowel continence. When you need to “hold it,” this muscle is doing the work.
• Iliococcygeus: The broadest part of the levator ani, stretching from the pelvic sidewalls to the coccyx. Provides a shelf of support for your pelvic organs.

Together, these three muscles form the hammock that holds your bladder, uterus, and rectum in place. When the levator ani weakens or is damaged, pelvic organ prolapse can result. This includes cystocele (bladder prolapse), rectocele (rectal prolapse), or uterine prolapse, where one or more organs descend into the vaginal canal.

Want to understand how your specific pelvic floor muscles are functioning? Our pelvic floor physical therapy specialists use real-time ultrasound and biofeedback to show you exactly which muscles are working and which ones need attention. Call (208) 667-1988. No referral required.

What the Muscles of the Pelvic Floor Actually Do

Now that you know the anatomy, here’s what these muscles do in your daily life. The pelvic floor has five primary functions.

1. Organ Support

The muscles of the pelvic floor hold your bladder, uterus, and rectum in their correct positions. Without adequate muscular support, these organs can descend. That’s pelvic organ prolapse, and it affects nearly half of all women to some degree.

2. Bladder and Bowel Control

Your pelvic floor muscles control when you urinate and have a bowel movement. They contract to hold things in and relax to let things out. When these muscles are weak, you may leak urine during a cough or sneeze. When they’re too tight, you may have difficulty emptying your bladder or bowels completely.

3. Sexual Function

The superficial pelvic floor muscles contribute directly to sexual sensation and arousal. Adequate muscle tone and blood flow in this area support pleasurable intercourse. Dysfunction in these muscles, whether from tension, weakness, or scarring, can contribute to painful intercourse.

4. Core Stability

Your pelvic floor is part of your deep core system. It works together with your diaphragm (above), your transverse abdominis (in front), and your multifidus muscles (in back) to stabilize your spine and pelvis during movement. When your pelvic floor isn’t functioning properly, your core stability suffers, which can contribute to lower back pain and hip problems.

Amanda, a 33-year-old CrossFit athlete from Hayden, had been dealing with persistent lower back pain for over a year. She’d seen a chiropractor and an orthopedic specialist. Nobody looked at her pelvic floor. When she came to Lake City Physical Therapy for a sports injury assessment, her therapist discovered significant pelvic floor muscle weakness on the left side. Her core system was compensating, and her back was paying the price. After addressing the pelvic floor imbalance alongside her sports rehabilitation, her back pain resolved within six weeks.

5. Circulation and Lymphatic Support

The pelvic floor muscles act as a pump for blood and lymphatic fluid in the pelvis. Regular contraction and relaxation helps maintain healthy circulation in the pelvic region. This is particularly relevant for women recovering from cancer treatment, where lymphedema management depends partly on healthy pelvic floor function.

How Pelvic Floor Muscles Get Damaged or Weakened

Understanding what can go wrong helps you protect these muscles and recognize symptoms early.

Pregnancy and Childbirth

The single biggest factor. During pregnancy, the growing uterus places increasing weight on the pelvic floor for nine months. Vaginal delivery stretches and can tear the levator ani muscles. Research shows that up to 30% of women sustain some degree of levator ani injury during their first vaginal delivery.

This doesn’t mean damage is inevitable. Prenatal physical therapy can prepare your pelvic floor muscles for delivery and postpartum recovery can restore function after birth.

Hormonal Changes

Estrogen helps maintain the strength and elasticity of pelvic floor tissues. During perimenopause and menopause, declining estrogen levels cause the muscles and connective tissue to thin and weaken. This is why many women first notice pelvic floor symptoms in their late 40s or 50s, sometimes years after the initial contributing factor like childbirth.

Chronic Strain

Repetitive heavy lifting with poor technique, chronic constipation and straining, persistent coughing from smoking or respiratory conditions, and high-impact exercise without proper pelvic floor engagement can all gradually weaken these muscles over time.

Surgery

Hysterectomy, C-section, and other pelvic surgeries can affect pelvic floor muscle function by disrupting the connective tissue attachments, altering nerve pathways, or changing the structural relationships between organs and muscles.

Conditions Like Endometriosis

Women with endometriosis often develop secondary pelvic floor dysfunction. Years of pelvic pain cause the muscles to guard and tighten, leading to a pelvic floor that’s chronically contracted rather than weak. This creates its own set of symptoms including pelvic pain, painful intercourse, and difficulty with bowel and bladder function.

Signs Your Pelvic Floor Muscles Need Attention

Your pelvic floor muscles don’t come with a warning light. But they do send signals. Pay attention if you notice:

• Leaking urine when you cough, sneeze, laugh, jump, or lift
• Rushing to the bathroom with sudden urgency
• A heavy or dragging sensation in your pelvis, especially later in the day
• Pain during or after intercourse
• Lower back pain that doesn’t respond to typical treatment
• Difficulty fully emptying your bladder or bowels
• Pelvic pain that’s hard to pinpoint
• Feeling like you’re “sitting on a ball”

Diane, a 61-year-old retired nurse from Spokane Valley, had been wearing pads for five years before she mentioned it to anyone. She thought leaking was just part of aging. Her daughter, who’d been treated at Lake City Physical Therapy after her second baby, convinced her to make an appointment. Diane’s assessment showed moderate levator ani weakness combined with poor muscle coordination. After 10 weeks of targeted pelvic floor muscle training, she stopped wearing pads entirely. “I’m angry I waited so long,” she told her therapist. “I thought this was just my life now.”

Recognizing any of these signs? Don’t wait five years like Diane. Our specialists can assess your pelvic floor muscles and create a plan to address what’s happening. Schedule your appointment or call (208) 667-1988. No referral needed.

How to Strengthen and Care for Your Pelvic Floor

Knowing your pelvic floor anatomy is the first step. Here’s how to put that knowledge into action.

Kegel Exercises (The Right Way)

Kegels target the levator ani, specifically the pubococcygeus muscle. But research shows about half of women do them incorrectly without guidance.

Basic technique:
1. Identify the muscles by imagining you’re stopping the flow of urine midstream.
2. Contract and lift those muscles. Think “up and in,” not “push down.”
3. Hold for 5 seconds while breathing normally.
4. Relax completely for 5 seconds.
5. Repeat 10 times, three sets per day.

For a personalized routine based on your specific muscle assessment, explore our custom pelvic floor exercise program.

Coordinate Your Breathing

Your diaphragm and pelvic floor are partners. When you inhale, both descend. When you exhale, both lift. Practicing diaphragmatic breathing teaches these muscles to work in sync, which improves core stability and reduces strain on the pelvic floor during daily activities.

Get a Professional Assessment

A pelvic floor physical therapist can evaluate the strength, endurance, coordination, and tone of each muscle layer using biofeedback and manual assessment. This is the only way to know whether your pelvic floor muscle function needs strengthening, relaxation, or better coordination. Our founder, Sheree DiBiase, has spent over 35 years building a team of specialists who focus exclusively on this. Can’t easily get to a clinic? We also offer telehealth appointments.

Frequently Asked Questions About Pelvic Floor Muscles

Can You Feel the Muscles of the Pelvic Floor?

Yes. Most women can feel a lifting and tightening sensation when they contract their pelvic floor. If you can stop the flow of urine midstream, you’ve located the right muscles. However, this test should only be used once to identify the muscles, not as a regular exercise.

Do Pelvic Floor Muscles Weaken with Age?

They can. Hormonal changes during menopause reduce the strength and elasticity of pelvic floor tissue. But age-related weakening isn’t inevitable. Women who maintain pelvic floor strength through exercise and awareness often avoid symptoms entirely.

Are Kegels the Only Exercise for the Pelvic Floor?

No. Kegels are one piece of a larger picture. Bridges, squats, diaphragmatic breathing, and core coordination exercises all contribute to pelvic floor health. Some women need pelvic floor relaxation exercises rather than pelvic floor strengthening if their muscles are too tight.

Can Men Have Pelvic Floor Problems?

Yes. Men have pelvic floor muscles too, and they can experience dysfunction, particularly after prostate surgery. This article focuses on women’s anatomy, but the principles of pelvic floor health apply across genders.

Understanding Your Pelvic Floor Is the First Step

The muscles of the pelvic floor do more than most people realize. They support your organs, control your bladder and bowels, contribute to sexual function, stabilize your core, and support pelvic circulation. When they’re not working properly, the effects ripple through your daily life.

Here’s what to remember:

• Your pelvic floor has three layers, each with distinct muscles and functions.
• The levator ani is the deepest and most critical muscle group for organ support.
• Childbirth, hormones, and chronic strain are the most common causes of dysfunction.
• Symptoms like leaking, pain, and heaviness are treatable, not something to accept.
• A professional assessment is the fastest way to understand what your muscles need.

Ready to understand your pelvic floor? Our pelvic floor specialists use biofeedback and ultrasound imaging to show you exactly how your muscles are functioning, and build a plan to get them working the way they should.

Schedule your appointment today:
– Coeur d’Alene: (208) 667-1988
– Spokane Valley: (509) 868-0849
– Find your nearest clinic
– No physician referral required

Your first visit is a conversation. From there, we build a plan around you.

This article is for educational purposes and does not replace professional medical advice. If you’re experiencing pelvic floor symptoms, consult a qualified healthcare provider or pelvic floor physical therapist for a personalized assessment.