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Flashcards in nerves Deck (13)
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1

somatic nerves

to skin and skeletal muscles

2

autonomic nerves

organs
sm and glands

3

describe somatic spinal nerves

motor to skeletal
necessary
sensory to body wall - not to viscera
segmental nerves form plexi - supplying specialised areas - cervical, brachial and lumbosacral

4

spinal cord structure

anterior root - motor
posterior root - sensory

5

spinal nerve

mix of afferent and efferent fibres

6

dorsal and ventral ramus

split after already mixed in spinal nerve
dorsal - supply back
ventral supply everything else - much larger

7

dermatome

An area of skin which is supplied by a single spinal nerve on one side or from a single spinal cord

8

myotome

Part of a skeletal muscle supplied by a single spinal nerve on one side or from a single spinal cord level

9

describe IC nerves

11
1 subcostal
mixed - motor and sensor
run under the costal groove of the rib
lateral cutaneous branch - anterior and posterior
anterior cutaneous branch - medial and lateral

10

describe the phrenic nerve

C3-5
somatic - no autonomic function/visceral distribution
motor fibres - diaphragm
sensory -diaphragm, pleural covering, mediastinal pleura and pericardium
supply peritoneum on inferior surface of central diaphragm

11

describe autonomic nerves

Motor to cardiac muscle, smooth muscle and glands
Sensory to visceral organs

12

PNS

rest and digest
extract nutrients
craniosacral

13

SNS

fight/flat
thoracolumbar