Keeping it simple ...
The bones of the pelvis and sacrum form a ring of bone at the base of the torso. The hole in the middle is known as the pelvic canal. The pelvic floor muscles span the pelvic canal, like a sling/hammock at the base of the body.
At the front of the pelvis the left and right pubic bones are joined by the pubic symphysis - one of our midline markers.
The shape of the pelvis and the pelvic canal differs between male and female.
The female pelvis is bigger and wider than the male and the female pelvic canal is also bigger, wider and more of an oval shape compared to the male.
The difference in shape of the pelvic canal means the size and shape of the pelvic floor muscles also differs between male and female.
The pelvic floor is made up of several muscles that form a basket-like structure, higher at the back.
Left and right sides are a mirror image, either side of midline.
The anus lies midline between the pelvic floor muscles.
The pelvic floor muscles are the Base of your Base-Line, providing the solid foundation necessary for healthy and pain-free movement.
Focusing on your Base-Line is the key to better physical health.
Picture your pelvic floor muscles in your mind.
Imagine them contracting and feel for them working.
It will take time to learn to fully activate your pelvic floor muscles if you are not used to using them.
Read up about Kegel exercises to get you started. Use several sources to find the info that works for you!
Strive for a feeling of balance, working towards the activation of your pelvic floor muscles in all positions.
It will become easier the more you practice - so keep working at it.
As you focus on activating your pelvic floor muscles you will become more aware of the sensory feedback that they provide. This feedback is important for our sense of positioning and movement known as proprioception and for feeling how to move to improve your posture.
Build the connection between body and mind.
Feel how to heal.
The anatomy of the pelvic region is complicated. As well as the pelvic floor muscles there are other muscles and many connective tissue structures (fascia, tendons, ligaments etc).
Knowing the anatomical details isn't important but it's good to appreciate the complexity of the pelvic region to help understand why this region is the source of so much pain for many people and why correct usage of the pelvic floor muscles is central to a healthy, balanced body.