Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
The posterior primary divisions of the thoracic spinal nerves divide into the medial and lateral branch. What do these branches supply?
|
Muscles, ligaments, skin & fascia of the dorsal aspect of the trunk.
|
|
|
|
What are the muscles/muscle groups innervated by the posterior primary division of the thoracic spinal nerves?
|
Iliocostalis, longissimus, spinalis, and semispinalis; multifidus and rotatores spinae, splenius colli, supra and interspinales
|
9 muscles
|
|
|
What does the anterior primary divisions of the thoracic spinal nerves supply?
|
Ventral and lateral aspects of the trunk.
|
|
|
|
Most fibers of the anterior primary divisions of the thoracic spinal nerves have an independent course 2. Which levels don't and what or where does each join?
|
T1 joins the brachial plexus and L1 joins the lumbosacral plexus.
|
|
|
|
What is the name given to the upper 11 pairs of thoracic spinal nerves that run along their corresponding rib?
|
Intercostal nerves
|
|
|
|
The last pair of anterior primary divisions of the thoracic spinal nerves are given off just below the last pair of ribs are called what?
|
Subcostal nerves
|
|
|
|
What muscles do the intercostal muscles supply?
|
Serratus posticus superioris & inferioris, levatores costorum, transversus spinalis, iliocostalis internus & externus, and the lower portion supplies the rectus abdominus, transversus abdominus, obliquus internus & externus.
|
11 muscles
|
|
|
Communications of the thoracic spinal nerves are with what?
|
Related paravertebral ganglion (usually 11 in thoracics).
|
|
|
|
Do the thoracic spinal nerves have a gray ramus communicans, a white ramus communicans, or both?
|
Both
|
|
|
|
The white ramus communicans of the thoracic spinal nerves is compose of what fiber type?
|
Preganglionic sympathetic
|
|
|
|
The gray ramus communicans of the thoracic spinal nerves contain what fiber type? What neuronal modalities are associated w/ these fibers?
|
Postganglion sypathetic efferent fibers. These are vasomotor, sudomotor, and pilomotor cells.
|
|
|
|
What do the posterior primary divisions of the lumbar spinal nerves supply?
|
Muscles, ligaments, skin & fascia of the dorsal aspect of the lower trunk.
|
|
|
|
What muscles do the posterior primary divisions of the lumbar spinal nerves innervate?
|
Iliocostalis lumborum, longissimus dorsi, multifidus, and rotatores spinae.
|
5 muscles
|
|
|
The anterior primary divisions of the lumbar spinal nerves contribute to the formation of what?
|
The lumbosacral plexus
|
|
|
|
What lumbar spinal nerves give off a white ramus communicans? Gray ramus communicans?
|
L1-L3. All L1-L5.
|
|
|
|
What neuronal modalities are associated w/ the gray ramus communicans of the lumbar spinal nerves?
|
Vasomotor, sudomotor, and pilomotor.
|
3 modalites
|
|
|
What join to form the lumbosacral plexus?
|
The ventral primary divisions of all lumbar, sacral, and coccygeal nerves.
|
|
|
|
What are the 2 major compontents of the lumbosacral plexus?
|
The lumbar and sacral plexuses.
|
|
|
|
What supplies the perinium and the the coccygeal region?
|
Sacral plexus by way the the pudendal plexus and the coccygeal plexus respectively.
|
|
