Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
anat 10/24 CH 13 PNS
peripheral nervous system
| Question | Answer |
|---|---|
| pairs of spinal nerves # | 31 |
| spinal nerves named according to | where the nerve exits the vertebrae (cervical above, lumbar/thoracic below) |
| two roots spinal nerves are formed by | ventral and dorsal |
| ventral root | contains motor axons from the ventral and lateral horns |
| dorsal root | contains sensory axons that will enter the dorsal horn |
| dorsal root ganglion | contains cell bodies of sensory neurons |
| spinal nerve | considered a mixed nerve as it contains both motor and sensory information |
| rami | what nerves split into once outside of the vertebral column |
| two types of rami | dorsal rami and ventral rami |
| dorsal rami | supplies motor and sensory to posterior trunk |
| ventral rami | supplies motor and sensory to anterior and lateral trunk and extremities |
| rami communicants | gray and white matter that carry autonomic information to and from the autonomic ganglion |
| connective tissue covering of peripheral nerves | endonurium, perinurium, and epinurium |
| endoneurium | covers individual axons |
| perneurium | covers fassicles |
| epineurium | covers entire nerve |
| plexus | where axons within a rami will split to join with axons from an adjacent rami |
| intercostal nerves | what the ventral rami of the thoracic spinal nerves become |
| four plexus' | cervical, lumbar, brachial and sacral |
| cervical plexus | formed by spinal nerves C1-C4, supplies the skin and muscle of the neck, contains the phrenic nerve |
| phrenic nerve | goes from C3-C5 and it allows our body to breath while at rest |
| brachial plexus | from spinal nerves C5-T1,contains three cords (medial, lateral, and posterial of the armpit) supplies skin and muscles of the upper extremities |
| musculocutaneous nerve | motor to the anterior arm and sensory to the lateral forearm |
| median nerve | motor to the anterior forearm and hand, sensory to the anterior lateral hand, sensory for the medial lateral part of hand (cut ring finger in half) and travel down the middle of the anterior arm |
| ulnar nerve | motor to the anterior forearm and the hand. sensory to the medial hand, funny bone nerve |
| axillary nerve | motor to the deltoid and the terres minor. sensory to shoulder |
| radial nerve | motor to the posterior arm, forearm and posterior hand. sensory to the posterior arm, forearm and posterior lateral hand. |
| lumbar plexus | formed by spinal nerves L1-L4, supplies pelvic girdle and lower extremities |
| femoral nerve | motor to anterior hip and thigh, motor to anterior medial thigh, medial leg, and medial foot |
| obturator nerve | motor to medial thigh, sensory to medial thigh |
| sacral plexus | formed by L4-S4 supplies muscle and skin of lower extremities |
| sciatic nerve | compbination of tibial nerve and common fibular nerve, motor to posterior thigh, two nerves split at knee |
| tibial nerve | motor to muscle of the lower leg (straight down the back)sensory to posterior leg and plantar of the foot |
| common fibular nerve | motor to lateral and anterior lower leg, sensory to anterior lower leg and top of foot |
| reflex arc | pathway of nerve impulses that produce reflexes |
| sensory receptors | respond to stimuli |
| sensory neuron | carries impulses from receptor to CNS through sensory axons |
| integrating center | where a decision is made |
| motor neuron | carries an impulse from the CNS to affector |
| effector | responds to impulse |
Created by:
kristeni558
Popular Physical Science sets