Back and Autonomic Nervous System Flashcards
What is the importance of the internal vertebral venous plexus?
- valveless and connects with veins of the pelvis, abdomen, and thorax
- route of metastasis of cancer cells to the vertebral column and the cranial cavity
Where is the internal vertebral venous plexus?
- epidural space
- connect with dural venous sinuses in cranial cavity
Where is the cerebrospinal fluid?
At subarachnoid space
What form the brachial and lumbosacral plexuses?
Ventral rami of the spinal nerve
What cover the interlaminar space and why is it important?
Ligamentum fava - passed by needle during lumbar puncture
Most common direction of herniation of nucleus pulposus?
- posterolateral direction - due the strength and position of the posterior longitudinal ligament
What are the particularity of the thoracic splanchnic nerves T5-T12, and lumbar splanchnic nerves L1-L2?
Their motor ganglia are prevertebral, near the organs, collaterals ▶️ celiac, aorticorenal, superior mesenteric, inferior mesenteric, pelvic
Exception of two neuron pathway in autonomic nervous system?
Adrenal medulla, one neuron pathway
What is the cause of Horner syndrome?
Loss the sympathetic innervation of the head (eyelid [superior tarsal] dilate pupils [dilatator pupil] sweat glands) ▶️ lesions ▶️ ptosis, anhidrosis, miosis
Who give the parasympathetic innervation of the viscera of the abdomen and thorax (foregut and midgut)?
Cranial Nerve X - uses terminal ganglia to arrive to the organs, neck in addition
A patient experiences loss of tear production on one side of the face is most likely related to inflammation, with resulting loss of parasympathetic outflow from which of the ganglia?
- pterygopalatine
* lacrimal, nasal and oral mucosal glands - fibers travels through VII CN
