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44 Cards in this Set
- Front
- Back
There are 8 |
cervical nerves |
|
there are 12 |
thoracic nerves |
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there are 5 |
lumbar nerves |
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there are 5 |
sacral nerves |
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there is 1 |
Coccygeal nerve |
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Enlargement due to arms |
cervical |
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enlargement due to legs |
lumbar |
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End of spinal cord |
conus medullaris |
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Pia that anchors spinal cord to coccyx |
filium terminale |
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spinal roots exiting the vertebral column |
cauda equina |
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each spinal nerve connects spinal cord via two |
roots |
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short spinal nerves that branch into three or four mixed |
rami |
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2 rami |
ventral and dorsal |
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Which rami form plexus? |
ventral |
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network or interlacing net of nerves |
plexus |
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Most important nerve of cervical plexus --major motor and sensory nerve of diaphragm |
Phrenic nerve |
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which area of the s.c. does not have a plexus? |
Thoracic |
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Name the 4 divisions of the brachial plexus? |
roots trunks divisions cords |
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five ventral rami of brachial plexus? |
roots |
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upper, middle and lower of brachial plexus? |
Trunks |
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Anterior, medial and posterior portions of brachial plexus -serve the front and back of limb |
Divisions |
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continuation of trunks (sort of) -later, medial and posterior fiber bundles |
cords |
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brachial plexus nerve that: innervates deltoid and teres minor (shoulder muscles) |
axillary |
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Brachial plexus nerve: sends fibers to biceps brachii, and brachialis |
musculocutaneous |
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brachial plexus nerve: -branches to flexor muscles of arm |
median |
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brachial plexus nerve: -supplies stuff to pinky and ring finger |
ulnar |
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brachial plexus nerve: -innervates extensors of radial nerve -good basketball shooting form |
radial |
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Nerve for knee extension |
femoral nerve |
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nerve for adducting leg -towards the middle line |
obturator nerve |
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the mother of all nerves |
sciatic nerve |
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sciatic nerve is made up of which two nerves |
tibial and common fibular |
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which nerve has to do with hamstrings, calf muscles and foot muscles? |
tibial nerve |
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which nerve causes dorsi flexion? |
common peroneal or fibular |
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area of skin supplied by single spinal segment? |
dermatomes |
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what are 4 special skin landmark dermatomes? |
nipple line xiphoid process umbilicus groin |
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Any nerve serving a muscle that produces movement at a joint also innervates the joint itself. -example of...? |
Hilton's law |
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rapid, predictable motor respons to a stimulus -inborn or learned |
reflex |
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name four properties of somatic reflexes |
stimulus quick involuntary stereotyped-occur the same way |
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inform brain as to state of muscles
-keep muscles and tendons from tearing -too much tension results in inhibition of muscle causing the tension |
Golgi tendon organs |
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proprioceptors that regulate the tension places on skeletal muscle -stretch reflex is initiated by these -more of these in tactile areas like hands |
muscle spindles |
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muscle fibers that can contract |
intrafusal |
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normal muscle cells |
extrafusal |
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knee jerk reaction -stretching activates muscle spindles -stretched muscle contracts -tapping knee stretches the quadriceps -hamstring relaxes |
stretch reflex |
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abnormal plantar reflex indicating corticospinal (motor) damage |
Babinski's sign |