Flashcards
Anatomy ch 16 cont.
Cards in this deck (23)
- 1Sympathethic vasodilation-heart= increase blood flow
-Lung= air flow
-Brain= metal awareness
-skeletal muscles= increase blood flow - 2Sympathetic Vasoconstriction-skin
-digestive system
-abdominal region
(less blood flow) - 3dual innervations includeeyes (iris), Heart (SA Node), Bronchioles muscles, Arterioles (coronary)
- 4Reflex Centers are found in:autonomic ganglia, spinal cord and brainstem
- 5Effectors with dual innervation:Heart, bronchioles, pupils, digestive tract
- 6Effectors with single innervation (sympathetic only)-sweat glands,
-arrector pili muscles,
-blood vessels of skin, skeletal muscles,heart, lungs and brain
-blood vessels of digestive viscera & kidney - 7Effectors with single innervation (parasympathetic only):Lacrimal gland (increased secretion)
- 8The sympathetic division has a widespread affect on the body due to:-Sympathetic innervation is through out the body
-each pre-ganglionic axon branches to synapse onto 24 or more ganglionic cells
-Adrenal Medulla releases epinephrine and norepinephrine into bloodstream (affecting tissues not innervated by ANS)
-multiple effectors - 9The parasympathetic division has localized effects because:-innervation is limited to the head and viscera (not the body wall or skin)
-Each preganglionic axon branches to synapse on to only 6-8 ganglionic cells
-post ganglionic cells usually go to a single effector
(stimulate regions)
- - 10NE is broken down by?monoamine oxidase (MAO) and catechol-o-methyltransference (comT) in surrounding tissue and in liver
- 11What is a varicosity?the telodendria form a branching network resembling a string of pearls, each "pearl" is a swollen segment packed with neurotransmitters, called varicosities.
- 12Difference in binding to receptors between epinephrine and norepinephrineepinephrine binds equally to alpha and beta receptors(nonspecific) while norepinephrine binds to alpha receptors more often then to beta receptors
- 13Short reflexes are found in?The autonomic ganglia (by pass the CNS entirely)
- 14Long reflexes are found in?the CNS
- 15Functions of the hypothalamus include:-regulates body temperature
-secretes hormones
-controls autonomic functions
-produces emotions and behavioral drives
-coordination of voluntary, emotional and autonomic functions
-Coordinates activities of the endocrine and nervous system
-coordinates circadian cycles - 16sensationinformation arriving from a stimulus
- 17perceptionconscious awareness of a sensation
- 18Labeled lineidentifies type (modality) of stimulus and body location of a receptor
- 19Sensory codingpattern of APs arriving convey information on strength, duration, and variation of the stimulus
- 20Adaptationa reduction in sensitivity in the presence of a constant stimulus
- 21Tonic receptors-always on, rate of action potential changes according to changes in level of stimulation
-not fast- adapting (ex: pain receptor) - 22Phasic receptors-receptors that are normally inactive and produce action potentials only to response to changes in level of stimulation
-fast-adapting (ex: temperature) - 23Peripheral adaptationreduces the amount of information that reaches the CNS
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- Flashcards on Anatomy ch 16 cont., created by Amanda Flores on 03/12/2014.
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- Amanda Flores
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