1. Spinal cord and spinal nerves

2. Spinal cord(basic) Function - conduction
(ascending, descending tracts)
- locomotion
- reflex integration
(spinal reflex center)
Structure
- cervical enlargement(C3~Th2)
- lumbar enlargement(Th9~Th12)
- medullary cone
- cauda equina
- terminal filum

3. Spinal cord(anatomy) * meninges - dura mater - arachnoid mater
- pia mater

4. Spinal cord(anatomy)

5. Spinal cord(anatomy) * cross-sectional anatomy
: gray matter + white matter

6. Spinal tracts
* ascending tracts + descending tracts

7. Descending tracts(CNS)
* lateral corticospinal tract
* anterior corticospinal tract

8. Ascending tracts(CNS)

9. Spinal nerves(anatomy)

10. Spinal nerves(anatomy)-ganglia
* classification of nerve fibers

11. Spinal nerves(anatomy)-ganglia

12. Spinal nerves * spinal nerves(31 pairs) - cervical nerves(8)
- thoracic nerves(12)
- lumbar nerves(5)
- sacral nerves(5)
- coccygeal nerves(1)
* plexuses
- cervical plexus
- brachial plexus
- lumbar plexus
- sacral plexus
- coccygeal plexus

13. Spinal nerves(structure)
* branches of a spinal nerve in relation to the spinal cord and vertebra
(cross section)

14. Spinal nerves(structure)
* rami of the spinal nerves

15. Nerve plexuses Cervical plexus Cervical plexus - C1~C4 & C5 일부
(phrenic nerve)
Cervical plexus

16. Nerve plexuses Brachial plexus(C5~Th1) - root - trunk - division
- cord
- peripheral nerve
Peripheral nerve
- axillary nerve
- radial nerve
- musculocutaneous
nerve
- ulnar nerve
- median nerve

17. Nerve plexuses Lumbar plexus (L1~L4, 일부 Th12) Peripheral nerve
- femoral nerve
- obturator nerve
- iliohypogastric nerve
(배빗근, 배가로근)
- ilioinguinal nerve

18. Nerve plexuses Sacral plexus (L4~L5, S1~S4)) Peripheral nerve
- sciatic nerve
(tibial + common fibular)
common fibular nerve
(=deep + superficial)
Lumbar + Sacral
= lumbosacral plexus

19. Dermatome

20. Reflex arc Components of the reflex arc - receptor - sensory neuron
- center
- motor neuron
- effector
반사활은 신체 항상성을 유지하기 위한 자율적이고 무의식적이며 보호적인 반응을 포함