pharmacology - Autonomic nervous system Flash Cards

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Title:	pharmacology - Autonomic nervous system
Description:	questions based on the handout from pharmocology - Arcadia
Number of Cards:	48
Save Count:	5
Author:	PAschoolorbust
Created:	2005-08-23
Tags:	ans arcadia pharmacology
Private	No

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- Question
- Answer
- Side 3

- what denotes the ANS?
- parasympathetic (craniosacral) system plus the sympathetic (thoracolumbar) system
- waht are the homeostatic fx of the ANS?
- pupil size and lens focus
  salivation,urination,deficatn
  GI tract mobility /digestion
  cardivascular -BPM, contratx
  glandular secretions
  sexual function
  thermoregulation
- sympa or para:
  vegetative fx, local rxns
- parasympathetic
- list para/sympa actions on the eye
- para: pupil constrx, accomodation
  sympa:pupil dilation
- ANS effects of GI tract
- para: peristalsis
  sympa:dec'd motility
- ANS effects on the cardiovascular system
- para: HR, contactility, constrx tone of arteioles and veins
  sympa: increases HR, CO , BP
- role of sympa on blood vessels
- venous constriction to increase return, arteriolar constriction in unneeded tissues, skin,
- which secretes EPI, sympa or para?
- sympa - in response to fight or flight
- pupil restricts in response to bright light
- para
- pupillary dilation
- sympa
- GI motility and secretions increase during superbowl
- para
- head ganglion
- hypothalamus
- CNS
- automic fx of the spinal cord and brain
- powerful influence on sympa and para activity flowing from CN 3,7,9,10
- parts of cerebral cortex
  limbic system
  cerebellum
  hypothalamus
  brain stem
- what denotes the craniosacral system?
- CN 3,7,9,10 and sacral spinal nerves S2,3,4
- what type of fibers are main in craniosacral?
- parasympathetic
- what denotes the thoracolumbar system
- T1-L2
- what type of fibers are main in thoracolumbar system?
- sympathetic
- this has short postganglionic, long preganglionic
- parasympathetic NS
- Ach is released onto nicotinic receptors Nn
- preganglionic NT of para and sympa
- NE is released onto adrenergic receptors
- sympathetic
- short preganglionic, long postganglionic
- sympathetic
- Ach is released onto muscarinic receptors M2, M3
- parasympathetic
- CN or SSN>pregang>Ach>nicotinic on postgang>Ach >target organ -muscarinic receptors
- parasympathetic NS
- path for parasympathetic to the head from midbrain
- midbrain>CN3>cilary gang>pulillary constriction & ciliary muscles
- path for parasympa to head via Pons
- Pons>CN7> lacrimal gland or submandibular gland
- to get to target organ, sympathetic fiber route utilizes?
- thoracolumbar>short pre>Ach>Nn>long post>NE>adrenergic receptor on target organ
- what are visceral efferents?
- motor fibers of sympa and para
- paravertebral ganglia
- located clost to both sides of vertebral column and are sympa chain gang.
- prevertebral ganglia
- collateral ganglia located periperhal to vertebral column
- what system activates sweating? what is unusual about this?
- sympathetic
  *Ach is the postgang. NT at the target organ instead of NE
- what is the termed used to describe the fibers activated during sweating?
- sympathetic cholinergic sudomotor fibers
- Horner's syndrome
- loss of sweating
- what are the motor neurons that go to the skeletal (voluntary) muscle called?
- alpha motor neurons
- what is different about alpha motor neuron path?
- 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
- path: spinal N>motor fiber>Ach>skeletal muscle>Nm
- somatic efferent fibers of the alpha motor neurons
- medulla>CN9>parotid gland- what system?
- parasympathetic to the head
- list the para fibers that go from body wall to limbs
- cant, there aren't any!
- to get to vasomotor, sudomot and pilomotor fibers of the arm, a nerve must travel...
- exit T2-T6>middle cervical ganglia or Stellage ganglia>thru brachial plexus>arm
- Vasomotor, sudomotor, pilomotor acronym
- VSP
- where is the NT going?
  T1-T6>superior cervical ganglia>internal carotid A>
- pupilary dilator musces, vasomotor, sudomotor fibers of the head
- to get to the VSP of lower body wall, legs and feet, a NT must travel via
- T12-L3>sympathetic chain>fused lower lumbar & sacral chain gang>lumbosacral plexus>via peripheral N> home
- parasympathetic to body cavity viscera - from medulla
- medulla>vagus N>heart, lungs, abdominal viscera
- path: S2-S4>pelvic splanchnic N>distal colon, bladder, geneticals, rectum anus. system?
- para
- using sympathetic system, take me to the heart from being poked in the back
- T4-T1>superior cervical gang>heart
- how do I get to the abdominal viscera from T5-T12?
- using sympa fibers>thoracic splanchnic N>synapse in celiac and SMA collateral gang clumped around the abd. aorta>follow the arteries>abdominal viscera
- I ahve synapsed i the inf. mesenteric ganglia and hypogasteric /pelvic plexi, where did I come from and where can I go?
- you came from T12-L2>lumbar splanchnic N>to the synapse>followed the arteries and landed in the pelvic viscera
- you go from PHL to Atlanta and on to PDX, where are you going?
- Im going home!!! yay!!!!