Nerves and their muscles Flashcards
Ventral muscle mass
becomes posterior anatomical compartment
receives anterior division nerve fibers
contains knee flexors
Dorsal muscle mass
becomes anterior anatomical compartment
receives posterior division nerve fibers
contain knee extensors
Lumbosacral plexus
L2 to S3
Anterior and posterior fibers which divide into terminal and collateral nerves
Lateral femoral cutaneous n. (collateral n.)
L2-3
Posterior division
Sensory around anterior superior iliac spine (ASIS)
Superior gluteal n. (collateral n.)
L4-S1
Posterior divison
Motor to gluteus minimus, medius and tensor fascia lata
Inferior gluteal n. (collateral n.)
L5-S2
Posterior divison
Motor to gluteus maximus
Nerve to piriformus (collateral n.)
S1-2
Posterior divison
Motor to piriformus
Nerve to obdurator internus (collateral n.)
L5-S2
Anterior divison
Motor to obdurator internus and superior gemellus
Nerve to quadratus femoris (collateral n.)
L4-S1
Anterior divison
Motor to quadratus femoris and inferior gemellus
Posterior femoral cutaneus n. (collateral n.)
S1-S3
Both divisions
Sensory to posterior thigh
Femoral n. (terminal n.)
L2-4
Posterior division
Anterior thigh
Obdurator n. (terminal n.)
L2-4
Anterior division
Medial thigh
Tibial n. (terminal n.)
L4-S3
Anterior division
Posterior thigh, posterior leg, sole of foot
Part of sciatic n.
Common fibular n. (terminal n.)
L4-S2 Posterior division Anterior leg (deep fibular n.) Lateral leg (superficial fibular n.) Part of sciatic n.