Gluteal Region Flashcards
List the superficial muscles of the gluteal region (4)
Gluteus (maximus, medius, minimus), tensor fascia latae
List the deep muscles of the gluteal region (4)
Piriformis, obturator internus, gemelli (superior and inferior), quadratus femoris
The gluteus maximus is innervated by…
Inferior gluteal nerve (L5, S1, S2)
Gluteus medius, minimus and tensor fasciae latae are innervated by…
Superior gluteal nerve (L4, S5, S1)
Piriformis muscle is innervated by…
Anterior rami of S1/S2.
Gluteus maximus main actions (3)
-Extends hip joint -Assists in lateral rotation of hip joint -Steadies thigh in place when raising contralateral lower limb
Gluteus medius and minimus main actions (2)
-Abduct and medially rotate hip joint
Action of tensor fascia latae
Flexes hip joint
Action of piriformis, obturator internus and gemelli muscles (2)
-Laterally rotate hip -Abduct hip joint
Does the pudendal nerve supply any structures of the gluteal region? Which structures if so?
No, none.
Pudendal nerve exits through which foramen
Lesser sciatic foramen
All innveration to the gluteal region passes through which foramen
Greater sciatic
The superior gluteal nerve emerges superior/inferior to the piriformis?
Superior (all others inferior)
Blood supply to the sciatic artery is supplied from which vessel?
Artery to the sciatic nerve
Which ligaments make up the greater & lesser sciatic foramens?
Sacrotuberous & sacrospinus
List the structures
A = Tensor fascia latae
B = Gluteus maximus
C = Piriformis
D = Gemelli (superior and inferior)
E = Gluteus medius
F = Quadrate femoris
G = Obturator internus
The superficial muscle group of the gluteal region has what functions on the lower limb (3)
Extensors, abductors and medial rotators of the thigh
The deep muscles of the gluteal region (piriformis, obturator internus, gemelli and quadratus femoris) are innervated by
The nerves from the sacral plexus
Label the shown structures
A = Greater sciatic foramen
B = Lesser sciatic foramen
C = Sacrotuberous ligament
D = Sacrospinous ligament
Pudendal nerve emerges between which vertebral levels?
S2-S4
Sciatic nerve emerges between which vertebral levels?
L4-S3
The skin over the posterior thigh is innervated by which nerve
Posterior cutaneous nerve of thigh
The sciatic nerve usually exits superior/ inferior to piriformis?
Inferior
The sciatic nerve supplies the gluteal region, T/F?
False - supplies nothing in the gluteal region
Where does the sciatic nerve seperate?
Distal thigh (in around 12% it will seperate in the pelvis)
Which nerve is more medial - the tibial or common fibular nerve?
Tibial (larger too)
Label the structures
A = sciatic
B = Tibial
C = Common fibular
Contents of femoral triangle (from lateral to medial) are:
Femoral Nerve, Femoral Artery, Femoral Vein, Lymphaitcs
(NAVLY)
The lateral border of the femoral triangle is
Sartorius
