Study Set Content:
Cranial Nerve VII
facial nerve
Cranial Nerve IX
glossopharyngeal nerve
Cranial Nerve X
vagus nerve
So post ganglionic neurons from this nerves innervates most of the organs in the thoracic and abdominal cavity. Due to its origin the parasympathetic nervous system is also called the
cranial sacral division
The enteric division in some books this is called the
third division
is a quasiautonomous or semiautonomous which regulates “low blood” water and electrolytes between the gut lumen and tissue fluid compartment.
enteric nervous system
It does this by directing the activity of the secrete motor neurons that(blank) the mucosa and the small/large intestine, and control its permeability to “ions?”
innervates
This third division of the ANS innervates the
GI Tract, pancreas, gall bladder, and constitutes to the brain of the gut.
This system functions independently from the CNS and controls
motility
it also controls
endocrine and exocrine secretions, and micro circulation of the GIT.
• This is modulated by both
sympathetic and parasympathetic divisions
Originates in the thoracolumbar portion of the spinal cord.
Sympathetic nervous system
The preganglionic neurons are short and usually synapse somewhere in the paravertebral ganglia (sympathetic chain).
Sympathetic nervous system
It originates from cranial nerve nuclei III, VII, IX, X as well as the third and fourth sacral spinal roots (craniosacral origins).
Parasympathetic nervous system
The postganglionic neurons are long and terminate at the visceral organs.
Sympathetic nervous system
The preganglionic neurons take a long path and synapse onto short postganglionic neurons in oncor-the-target organ.
Parasympathetic nervous system
Major difference in the anatomical arrangement of neurons leads to the (blank) of each division.
variations of functions
The SNS is widely distributed practically all affecter systems in the body while the Parasympathetic division distribution is
limited
These two systems (blank) each other actions
oppose
Remember that both systems are working at all times: however, which system predominates over an organ will depend on the
situation
