front 1 The dorsal root ganglia mainly contain cell bodies of sensory neurons. axons of sensory neurons. cell bodies of motor neurons. axons of motor neurons. synapses. | back 1 cell bodies of sensory neurons. |
front 2 The spinal cord has gray matter on the: outside, white matter on the inside, and a posterior motor root. inside, white matter on the outside, and a anterior motor root. inside, white matter on the outside, and a posterior motor root. outside, white matter on the inside, and a anterior motor root. | back 2 inside, white matter on the outside, and a anterior motor root. |
front 3 Axon crossing from one side of the spinal cord to the other within
the gray anterior gray horns lateral gray horns posterior gray horns gray commissures white commissures | back 3 gray commissures |
front 4 The adult spinal cord only extends to which vertebral level? coccyx sacral third or fourth lumbar first or second lumbar last thoracic | back 4 first or second lumbar |
front 5 The ________ nerve, which arises in the cervical plexus, innervates the lesser occipital radial phrenic ansa cervicalis sciatic | back 5 phrenic |
front 6 Which of the following nerves does not arise from the brachial plexus? | back 6 phrenic |
front 7 The white matter of the spinal cord contains both axons and dendrites. interneurons. sensory and motor nuclei. bundles of axons with common origins, destinations, and functions. bundles of dendrites with common origins, destinations, and functions. | back 7 bundles of axons with common origins, destinations, and functions. |
front 8 The posterior root ganglia contain: axons of motor neurons axons of sensory neurons cell bodies of motor neurons cell bodies of sensory neurons interneurons | back 8 cell bodies of sensory neurons |
front 9 Spinal nerves from the sacral region of the cord innervate the ________ leg shoulder facial abdominal intercostal | back 9 leg |
front 10 The outward projections from the central gray matter of the spinal
cord are wings. horns. fibers. pyramids. tracts. | back 10 horns |
front 11 Spinal nerves are_________nerves purely sensory purely motor mixed interneuronal involuntary | back 11 mixed |
front 12 The _____________ is a stand of connec!ve !ssue that connects to
the conus medullaris filum terminale cauda equina dorsal root ventral root | back 12 filum terminale |
front 13 If the posterior root of a spinal nerve were cut, what would be the
result in complete loss of sensation complete loss of voluntary movement loss of neither sensation or movement but only of autonomic control complete loss of sensation and movement | back 13 complete loss of sensation |
front 14 The subarachnoid space lies between which two layers of meninges? arachnoid and epidura arachnoid and pia arachnoid and dura pia and dura | back 14 arachnoid and pia |
front 15 The entire spinal cord gives rise to _____ pair of spinal nerves. 5 12 25 31 35 | back 15 31 |
front 16 The ________ of each spinal nerve innervates the skin and muscles of the dermatome ventral ramus white ramus communicantes gray ramus communicantes dorsal ramus | back 16 dorsal ramus |
front 17 The layer of connective tissue that surrounds a fascicle within a
peripheral epineurium. perineurium. epimysium. endoneurium. endosteum. | back 17 perineurium. |
front 18 Muscles of the neck and shoulder are innervated by spinal nerves from
the cervical lumbar thoracic sacral coccygeal | back 18 cervical |
front 19 Spinal nerves exiting the cord from the level of L4 to S4 form the: lumbar plexus femoral plexus sacral plexus thoracic plexus | back 19 sacral plexus |
front 20 Side to side movements of the spinal cord are prevented by: filum terminale denticulate ligaments dura mater pia mater | back 20 denticulate ligaments |