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48 Cards in this Set
- Front
- Back
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what denotes the ANS?
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parasympathetic (craniosacral) system plus the sympathetic (thoracolumbar) system
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waht are the homeostatic fx of the ANS?
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pupil size and lens focus
salivation,urination,deficatn GI tract mobility /digestion cardivascular -BPM, contratx glandular secretions sexual function thermoregulation |
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sympa or para:
vegetative fx, local rxns |
parasympathetic
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list para/sympa actions on the eye
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para: pupil constrx, accomodation
sympa:pupil dilation |
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ANS effects of GI tract
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para: peristalsis
sympa:dec'd motility |
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ANS effects on the cardiovascular system
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para: HR, contactility, constrx tone of arteioles and veins
sympa: increases HR, CO , BP |
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role of sympa on blood vessels
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venous constriction to increase return, arteriolar constriction in unneeded tissues, skin,
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which secretes EPI, sympa or para?
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sympa - in response to fight or flight
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pupil restricts in response to bright light
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para
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pupillary dilation
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sympa
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GI motility and secretions increase during superbowl
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para
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head ganglion
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hypothalamus
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CNS
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automic fx of the spinal cord and brain
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powerful influence on sympa and para activity flowing from CN 3,7,9,10
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parts of cerebral cortex
limbic system cerebellum hypothalamus brain stem |
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what denotes the craniosacral system?
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CN 3,7,9,10 and sacral spinal nerves S2,3,4
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what type of fibers are main in craniosacral?
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parasympathetic
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what denotes the thoracolumbar system
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T1-L2
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what type of fibers are main in thoracolumbar system?
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sympathetic
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this has short postganglionic, long preganglionic
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parasympathetic NS
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Ach is released onto nicotinic receptors Nn
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preganglionic NT of para and sympa
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NE is released onto adrenergic receptors
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sympathetic
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short preganglionic, long postganglionic
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sympathetic
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Ach is released onto muscarinic receptors M2, M3
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parasympathetic
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CN or SSN>pregang>Ach>nicotinic on postgang>Ach >target organ -muscarinic receptors
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parasympathetic NS
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path for parasympathetic to the head from midbrain
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midbrain>CN3>cilary gang>pulillary constriction & ciliary muscles
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path for parasympa to head via Pons
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Pons>CN7> lacrimal gland or submandibular gland
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to get to target organ, sympathetic fiber route utilizes?
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thoracolumbar>short pre>Ach>Nn>long post>NE>adrenergic receptor on target organ
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what are visceral efferents?
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motor fibers of sympa and para
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paravertebral ganglia
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located clost to both sides of vertebral column and are sympa chain gang.
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prevertebral ganglia
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collateral ganglia located periperhal to vertebral column
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what system activates sweating? what is unusual about this?
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sympathetic
*Ach is the postgang. NT at the target organ instead of NE |
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what is the termed used to describe the fibers activated during sweating?
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sympathetic cholinergic sudomotor fibers
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Horner's syndrome
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loss of sweating
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what are the motor neurons that go to the skeletal (voluntary) muscle called?
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alpha motor neurons
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what is different about alpha motor neuron path?
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fibers exit the spinal cord and go directly to the skeletal muscle -activate motor endplate and cx release of Ach onto Nm receptors
THERE ARE NO GANGLIA INVOLVED |
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path: spinal N>motor fiber>Ach>skeletal muscle>Nm
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somatic efferent fibers of the alpha motor neurons
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medulla>CN9>parotid gland- what system?
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parasympathetic to the head
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list the para fibers that go from body wall to limbs
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cant, there aren't any!
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to get to vasomotor, sudomot and pilomotor fibers of the arm, a nerve must travel...
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exit T2-T6>middle cervical ganglia or Stellage ganglia>thru brachial plexus>arm
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Vasomotor, sudomotor, pilomotor acronym
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VSP
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where is the NT going?
T1-T6>superior cervical ganglia>internal carotid A> |
pupilary dilator musces, vasomotor, sudomotor fibers of the head
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to get to the VSP of lower body wall, legs and feet, a NT must travel via
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T12-L3>sympathetic chain>fused lower lumbar & sacral chain gang>lumbosacral plexus>via peripheral N> home
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parasympathetic to body cavity viscera - from medulla
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medulla>vagus N>heart, lungs, abdominal viscera
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path: S2-S4>pelvic splanchnic N>distal colon, bladder, geneticals, rectum anus. system?
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para
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using sympathetic system, take me to the heart from being poked in the back
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T4-T1>superior cervical gang>heart
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how do I get to the abdominal viscera from T5-T12?
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using sympa fibers>thoracic splanchnic N>synapse in celiac and SMA collateral gang clumped around the abd. aorta>follow the arteries>abdominal viscera
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I ahve synapsed i the inf. mesenteric ganglia and hypogasteric /pelvic plexi, where did I come from and where can I go?
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you came from T12-L2>lumbar splanchnic N>to the synapse>followed the arteries and landed in the pelvic viscera
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you go from PHL to Atlanta and on to PDX, where are you going?
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Im going home!!! yay!!!!
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