pns

what does pns stand for

peripheral nervous system

what are the two structure of the pns

cranial and spinal nerves

what is structure of the nerve

the connective tissue coverings

what is endoneurium

loose connective tissue around individual axons

what is perineurium

coarser connective tissue around fascicles

what is epineurium

though fibrous sheath around all fascicles of the nerve

one of the structure of the nerve

what are the five cranial nerve that contain axons in the motor cranial nerve

oculomotor iii

trochlear iv

abducens vi

accessory ix

hypoglossal xii

what are the four mixed crianal nerves that contain axons of both sensory and motor neurons

trigeminal v

facial vii

glossopharyngeal ix

vagus x

in the spinal nerves what does the root carry

in the dorsal/posterior root only sensory/afferent neurons to spinal cord

the dorsal root ganglion contains sensory cell bodies

in the ventral / anterior root only motor/efferent from spinal cord

where does neurons exit to vertebral column

spinal nerve

what is rami

rami is ramus where it contains both sensory and motor information

a bundles of axon within in a nerve is what

fascicles

what are the five motor root of the facial nerve

temporal zygomatic buccal mandibular and cervical nerve

what are three branches of trigeminal

ophthalmic maxillary and mandibular

how many pairs of cervical spinal are there

8 pairs

how many pairs of thoracic spinal nerve

12 pairs

how many pairs of lumbar

5 pair

how many spinal nerve

5 pair

is there coccygeal nerve

1 tiny pair

what is a network of nerve is known as

plexus

which component of a somatic sensory neuron transmit an action potential from pp to posterior horn

central process