Autonomic Nervous System Flashcards
Location of preganglionic neuron and postganglionic neurons of the sympathetic nervous system
Preganglionic: cell body is in the thoracic and lumbar segment of the spinal cord
Postganglionic: cell body is in the paravertebral or prevertebral ganglia
Location of preganglionic neuron and postganglionic neurons of the parasympathetic nervous system
Preganglionic: cell body is in the brainstem and sacral segment of the spinal cord
Postganglionic: cell body is in the ganglia at the walls of effector organs
CNS: Neurotransmitter used by the somatic motor neuron
Acetylcholine
CNS: Neurotransmitter used by the preganglionic sympathetic neuron
Acetylcholine
CNS: Neurotransmitter used by the postganglionic sympathetic neuron (not in sweat glands, piloerector muscles)
Norepinephrine
CNS: Neurotransmitter used by the postganglionic sympathetic neuron in sweat glands, piloerector muscles
Acetylcholine
CNS: Neurotransmitter used by the preganglionic and postganglionic parasympathetic neuron
Acetylcholine
CNS: Type of receptors in sweat glands and piloerector muscles
Nicotinic receptors
CNS: Type of receptors in smooth muscles and glands innervated by the sympathetic nervous system (except sweat glands and piloerector muscles)
Muscarinic receptors
CNS: Type of receptors in smooth muscles and glands innervated by the parasympathetic nervous system
Muscarinic receptors
CNS: Type of receptors in skeletal muscle
Nicotinic receptors
Type of adrenergic nicotinic receptor for smooth muscle contraction
alpha 1 (MOA: IP3, increase ICF Ca2+)
Type of adrenergic nicotinic receptor at the presynaptic terminal and platelets
alpha 2 (MOA: decrease cAMP)
Type of adrenergic nicotinic receptor in the heart, salivary glands, adipose tissue, kidney
Beta 1 (MOA: increase cAMP)
Type of adrenergic nicotinic receptor for smooth muscle relaxation
Beta 2 (MOA: increase cAMP)
Cranial nerves associated with parasympathetic nervous system
CN III, VII, IX, X
3 organs with no parasympathetic innervation
ventricles of the heart, blood vessels, pregnant uterus
To see far objects:
a. lens should be flat/spherical?
b. suspensory ligaments should be tensed or relaxed?
c. ciliary muscles should be relaxed or contracted?
a. lens flat
b. suspensory ligaments tensed
c. ciliary muscles relaxed
To see near objects:
a. lens should be flat/spherical?
b. suspensory ligaments should be tensed or relaxed?
c. ciliary muscles should be relaxed or contracted?
a. lens spherical
b. suspensory ligaments relaxed
c. ciliary muscles contracted
Sympathetic or Parasympathetic?
Mydriasis
Sympathetic
Sympathetic or Parasympathetic?
Accomodation
Parasympathetic
Sympathetic or Parasympathetic?
Sweating
Sympathetic
Sympathetic or Parasympathetic?
Salivation
Mucoid: sympathetic
Watery: parasympathetic
Sympathetic or Parasympathetic?
Glandular secretion
Parasympathetic
Sympathetic or Parasympathetic?
Increased HR, cardiac contractility
Sympathetic
Sympathetic or Parasympathetic?
Bronchoconstriction
Parasympathetic
Sympathetic or Parasympathetic?
GI motility/peristalsis
Parasympathetic
Sympathetic or Parasympathetic?
Increased blood glucose, lipids
Sympathetic
Sympathetic or Parasympathetic?
GU and GI sphincter contraction
Sympathetic
Sympathetic or Parasympathetic?
Uterine contraction
Sympathetic
Sympathetic or Parasympathetic?
Urination
Parasympathetic
Sympathetic or Parasympathetic?
Defecation
Parasympathetic
Sympathetic or Parasympathetic?
Vasodilation - skeletal muscles
Sympathetic (Beta 2)
Sympathetic or Parasympathetic?
Vasoconstriction - skin, splanchnic, renal, venous
Sympathetic (Alpha 1)
Sympathetic or Parasympathetic?
Piloerection
Sympathetic
Sympathetic or Parasympathetic?
Erection
Parasympathetic
Beta 3 receptor is found where?
Brown fat (for thermogenesis)
