ANS Flashcards
What does GVA monitor
- stretch
-pain
-temperature and chemical changes - nausea and hunger
What two systems lie in the GVE category and where do they synapse?
-Sympathetic and parasympathetic
- peripheral ganglion
Somatic nervous system is responsible for innervation of?
Skeletal muscle
How many motor units does the ANS and Somatic have
2 ANS
1 Somatic
Where does the postganglionic go to ?
Effector organ
Where does the parasympathetic come from
Craniosacral division
Where does the sympathetic come from
Thoracolumbar division
Where does the cranial division arise from?
- nuclei in the brainstorm
what four cranial nerves are associated with the cranial division
-cn 3: ocuulomotor
- cn 7: Facial
- cn 9: glassopharyngeal
- cn 10: vagus
What levels do the sacral division arise from
Where do the cell bodies lie
S2, S3, S4
Lateral horns of the gray matter
Cranial nerve 3
Where do preganglionic axons travel to
What does the postganglionic axons innervate
-Oculomotor
- Ciliary ganglion of the orbit
- pupillary contractor muscle and the ciliary body of the lens
Cranial nerve 7
Preganglionic axon travel to the?
Postganglionic axons innervate
- facial nerve
- pterygopalatine ganglion and submandibular ganglion
- 2/3 main salivary glands, lacrimal glands and mucous glands of the nasal and oral cavities
Cranial 9
Preganglionic axon travels to the
Postganglionic axons innervate the
-glassopharyngeal
- Otic ganglion
- parotid salivary gland
Cranial nerve 10
Preganglionic axon synapses with? And in the?
Postganglionic axons innervate the
- vagus
- postganglionic cell bodies : in the intramural ganglia
- with or within the target organ
- the thoracic organs and organs of the foregut and midgut
Sacral division
Preganglionic axons leave ? And travel to ? By what nerves?
What do they synapse with?
- S2-S4: target organs : splanchic nerves
- postganglionic cell bodies that reside in intramural ganglion
Paravertebral ganglia ( chain) lie on
Later side of vertebral column
Prevertebral (preaortic) ganglia lie
Anterior to the abdominal aorta
What cell bodies reside in the para and prevert ganglia
Postganglionic sympathetic cell bodies
Successive chain ganglia are interconnected by
Short nerves into sympathetic trunks
How many chain ganglion?
Which fuse during development
One for each spinal nerve
Superior, middle and inferior cervical ganglia
How does the prevertebral ganglia differ from the chain
-Not paired
-not segmentally arranged
- lie anterior
What are the main prevertebral ganglion
Celiac, superior mesenteric, aorticorenal, and inferior mesenteric
Preganglionic neurons whose cells bodies lie in later horn send their motor axons through?
Ventral roots
(sympathetic pathways) Where do axons enter
Spinal nerve and first part of the ventral ramus
