Gluteal Region: Neurovascular Relationships Flashcards
What nerves and vessels exit ABOVE piriformis muscle?
superior gluteal v. a. n.
What nerves and vessels exit BELOW piriformis muscle?
inferior gluteal v. a. n.
What nerves and vessels exit the greater sciatic foramen and run in a place between gluteus medius and minimus?
superior gluteal v. a. n.
What nerves and vessels exit the greater sciatic foramen and run deep to the gluteus maximus?
inferior gluteal v. a. n.
What nerve exits the greater sciatic foramen and typically below piriformis, and descends into posterior thigh?
sciatic n.
What nerves and vessels exit the greater sciatic foramen BELOW piriformis and then enter the lesser sciatic foramen to supply structures of the perineum?
pudendal n. and internal pudendal a. and v.
What structures pass between the sacrotuberous and sacrospinous ligaments?
pudendal n. and internal pudendal a. and v.
What forms the sacral plexus?
ventral rami of L4 and L5 and the ventral rami of S1-S4
Where is the sacral plexus located?
deep in the pelvis along the internal surface of psoas major
We are responsible for knowing 3 branches from the sacral plexus. Name them.
- Superior gluteal n.
- Inferior gluteal n.
- Sciatic n.
Which branch of the sacral plexus?
L4-S1, innervates gluteus medius, gluteus minimus, & tensor fascia lata
superior gluteal n.
Which branch of the sacral plexus?
L5-S2, innervates gluteus maximus
inferior gluteal n.
Which branch of the sacral plexus?
L4-S3, largest nerve in the body
sciatic n.
Which branch of the sacral plexus?
has a tibial part (anterior division) and a common fibular part (posterior division)
sciatic n.
Which branch of the sacral plexus?
does not innervate muscles in the gluteal region
sciatic n.
