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16 Cards in this Set
- Front
- Back
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The spinal cord descends from the foramen magnum down to what skeletal landmark?
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L1
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Describe the relationship between the white matter and the gray matter in the spinal cord.
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grey matter= central
white matter=peripheral |
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What do we call the long dorsal and ventral roots of the spinal cord that extend beyond the conus medularis (conical tip at end of spinal cord)?
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cauda equina
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What root of the spinal nerve carries outgoing motor information?
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Anterior/ ventral
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What root of the spinal nerve carries incoming sensory information?
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Posterior/ dorsal
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What do we call the areas of the gray matter that point in the anterior, lateral, and posterior directions and what neuron components are associated with each?
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anterior (ventral) horn: somatic motor cell bodies
lateral horn: autonomic motor cell bodies Posterior (dorsal) horn: interneuron cell bodies, axons of sensory (visceral & somatic) neurons |
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Where are the cell bodies of the sensory neurons located?
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dorsal (posterior) root ganglia
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What do we call the main branch of the spinal nerve that extends anteriorly or laterally to innervate the ventrolateral surface of the body, the body wall, and the limbs?
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ventral (anterior) ramus
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What do we call the minor branch of the spinal nerve that extends posteriorly regions alongside the spine?
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dorsal (posterior) ramus
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What minor branches of the spinal nerve (in the region from T1 to L2) carry signals to or from ganglia associated with the ANS?
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rami communicantes
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What nerve plexus consists of ventral rami from spinal nerves C1-C4 and innervates such things as the shoulder and neck as well as the diaphragm?
What nerve from this plexus (C3-C5) innervates the diaphragm? |
cervical plexus
phrenic nerve |
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What nerve plexus consists of ventral rami from spinal nerves C5-T1 and innervates such things as the upper limb, the pectoralis muscles and the latissimus dorsi muscle?
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Brachial plexus
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Name the major nerves of Brachial plexus.
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-Axillary
-musculocutaneous -median -radial -ulnar |
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What nerve plexus consists of ventral rami from spinal nerves T12-L4 and innervates such things as the abdominal muscles, genitalia, and the anterior and medial muscles of the thigh?
Name the major nerves of this plexus. |
lumbar plexus
-femoral -obturator |
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What nerve plexus consists of ventral rami from spinal nerves L4-S4 and innervates such things as the skin and muscles of the crural region; the foot, and the posterior muscles of the thigh?
What nerve from this plexus (L4-S3) is the largest and longest nerve in the body and innervates the hamstrings and all of the crural muscles? |
sacral plexus
-sciatic notch |
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What do we call nerves that are formed from the ventral rami of T1-T12 that do not contribute to plexuses and innervate such things as the intercostals muscles, abdominal muscles, and skin of the chest and abdomen?
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intercostal and subcostal nerves
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