spinal cord

lumbar nerves

5 pairs

cervical nerves

8 pairs

ventral horn ( anterior horn)

send motor signals to the spinal nerves

median nerve

wrist flexors, pronator teres and quadratus anterior

thoracic nerves

12 pairs

obturator nerve

adductors, gracilis

musculocutaneous nerve

bicep brachi, coracobrachialis, brachialis anterior

tibial nerve

biceps femoris long head, semimembranosus, semitendinosus, gastrocnemius, soleus anterior

common fibular nerve

biceps femoris short head posterior

cervical plexus

c1-c5 has two nerves the hypoglossal and the phrenic

phrenic nerve

c5 innervates diaphragm breathing

brachial plexus

c5-t1 divides into two divisions anterior and posterior. anterior- ulnar nerve, median nerve, musculocutaneous nerve. posterior- axillary nerve, radial nerve

dorsal root ganglion

contains cell body

axillary nerve

deltoid and teres minor posterior

ulnar nerve

flexor carpi ulnaris, flexor digitorum profundus, adductor pollicis anterior

inferior gluteal nerve

gluteus maximus posterior

superior gluteal nerve

gluteus medius, gluteus minimus posterior division

hypoglossal nerve

its c1 and helps stick out tongue

lumbar plexus

l1-l4 posterior- femoral nerve anterior- obturator nerve

sacral plexus

l4-s5

superficial fibular nerve

peroneus longus and brevis

femoral nerve

quadriceps, Sartorius

dorsal horn (posterior horn)

receive sensory information from the somatic nerves

deep fibular nerve

tibialis anterior. extensor digitorum longus, extensor hallucis longus

radial nerve

triceps, brachioradialis and wrist extensors posterior