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21 Cards in this Set
- Front
- Back
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hypaxial muscles
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cells that migrate anteriorly
limbs and trunk muscles |
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epaxial muscles
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cells migrated posteriorly
intrinsic muscles of back (deep back muscles) associated dermis |
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Visceral sensory neurons are derived from ___
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neural crest cells
becomes spinal ganglion |
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GVA - General visceral afferent fibers - arise from what and give rise to what?
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Arise from neural crest
cells enter neural tube medially enter laterally to body acts as: chemoreception mechanoreception stretch reception |
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Preganglionic fibers
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axons of visceral motor neurons located in the spinal cord
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Visceral motor neuron are also known as? Location?
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Preganglionic motor neurons
located in spinal cord |
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Visceral motor neurons outside CNS are called? What are their axons called
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Postganglionic motor neurons
postganglionic fibers |
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Visceral sensory neurons are derived from ___
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neural crest cells
becomes spinal ganglion |
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GVA - General visceral afferent fibers - arise from what and give rise to what?
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Arise from neural crest
cells enter neural tube medially enter laterally to body acts as: chemoreception mechanoreception stretch reception |
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Visceral motor components at levels T1 - L2 are termed? What does it innervate?
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Sympathetic
Peripheral regions of body Viscera |
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Visceral motor components in Cranial and Sacral regions are termed?
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Parasympathetic
innervation of viscera only |
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Paravertebral sympathetic trunk
Location |
ascending and descending fibers
all ganglia extends entire length of vertebral column |
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Paravertebral sympathetic trunk
Function |
Enables visceral motor fibers of sympathetic part of ANS division of PNS to be distributed to peripheral regions innervated by all spinal nerves.
Visceral Motor (Sympathetics) only arise out of T1-L2 |
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White Rami Communicans
Location |
Levels T1-L2
Lateral position compared to gray rami furthest from spinal cord |
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Splanchnic Nerves
location of preganglionic fibers |
Greater T5 - T9
Lesser T10 - 11 Least T12 Lumbar Splanchnic L1 - L2 |
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Parasympathetics innervate?
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structures in head and neck
thoracic and abdominal viscera inferior abdominal viscera pelvic viscera arteries associated with erectile tissues of perineum |
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Parasympathetic divisions
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Cranial nerves
III VII IX Above innervate Structures in head and neck only X - vagus n. - innervates - thoracic and most abdominal viscera S2-S4 inferior abdominal viscera pelvic viscera arteries associated with erectile tissues of perineum |
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CNS Parasympathetic
III, VII, and IX innervations |
III - Lacrimal gland
VII - Pupillary constriction Salivary Gland IX - Parotid gland |
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Ganglions of Parasympathetic fibers
III VII IX |
III Ciliary ganglion
VII - Pterogopalatine Submandibular Ganglion IX - Otic ganglion |
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Parasympathetics
Vagus nerve innervation |
Thoracic visceral plexus to heart
Prevertebral plexus to synapse with nerve cells of enteric system Innervate abdominal viscera |
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Parasympathetic - S2 - 4 pathway
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splanchnic nerves to prevertebral plexus to pelvic viscera
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