Nerves of the Lumbosacral Plexus Flashcards
1
Q
Iliohypogastric nerve
A
- T12-L1
- Sensation to skin over the lateral gluteal and hypogastric regions
- Motor to the internal oblique muscles and transverse abdominal muscles
2
Q
Ilioinguinal nerve
A
- L1
- Sensory to the upper portion of the inner thigh, the base of the penis, and upper part of the scrotum in men and the mons pubis and lateral aspect of the labia in women
3
Q
Genitofemoral nerve
A
- L1-L2
- Sensation to the upper anterior thigh, as well as the skin of the anterior scrotum in males and mons pubis in females
4
Q
Lateral Femoral Cutaneous nerve
A
- L2-L3
- Sensation to skin on the anterior and lateral aspects of the thigh to the level of the knee
5
Q
Obturator nerve
A
- L2-L4
- Obturator externus
- Adductor longus
- Adductor brevis
- Gracilis
- Pectineus
- Adductor magnus
6
Q
Femoral nerve
A
- L2-L4
- Iliopsoas
- Pectineus
- Sartorius
- Quadriceps femoris
7
Q
Superior Gluteal nerve
A
- L4-S1
- Gluteus medius
- Gluteus minimus
- Tensor fasciae latae
8
Q
Inferior Gluteal nerve
A
- L5-S2
- Gluteus maximus
9
Q
Posterior Femoral Cutaneous nerve
A
- S1-S3
- Sensation
10
Q
N. to piriformis
A
- S1-S2
- Piriformis
11
Q
N. to obturator internus
A
- L5-S1
- Obturator internus
- Gemelli
12
Q
N. to quadratus femoris
A
- L5-S1
- Quadratus femoris
13
Q
Sciatic nerve
A
- L4-S2: Common Fibular branch
- L4-S3: Tibial branch
Direct branch innervation - Biceps femoris (short head = common fib; long head = tibial)
- Semitendinosus
- Semimembranosus
- Medial adductor magnus
14
Q
Sciatic nerve, common fibular branch
A
- Superficial fibular n.
- Deep fibular nerve
15
Q
Sciatic nerve –> common fibular branch –> Superficial fibular n.
A
- Fibularis brevis and longus
