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Chapter 14

The Autonomic Nervous System

QuestionAnswer
the ANS regulates: functions of internal organs
the system that innervate smooth and cardiac muscles & glands ANS
the ANS operates is known as the ___ system involuntary
this system makes adjustments to ensure support for body activities ANS
the ANS is also called the _____ general visceral motor system
the somatic & autonomic nervous system differs in: their effectors, efferent pathways & ganglia, & target organ response to neurontransmitters
somatic nervous system stimulates: skeletal muscle
the somatic system is a ___ motor neuron chain that forms pathways from CNS to its effector single
the peripheal is broken up into 2 divisions. what are they? sensory & motor
what are the 2 motor divisions? somatic & autonomic
what are the 2 divisions of the autonomic system? sympathetic & parasympathetic
ANS has dual innervation, which means:
is somatic voluntary or involuntary? voluntary
somatic system neurotransmitter ACh
somatic only has a ___ effect stimulatory
the autonomic system can have an __ or __ effect stimulatory or inhibitory
what is the autonomic system neurotransmitter? ACh or norepinephrine
the type of effect depends on the: neurotransmitter
sympathetic system is known as the: fight or flight system
all preganglionic fibers release: ACh
how many neuron chains does the autonomic system have? 2
this autonomic system mobilizes body during activity sympathetic
exercise, excitement, emergency or embarrassment are apart of which system? sympathetic
___ and ___ stimulates the somatic nervous system norepinephrine & epinephrine
which system has short preganglionic and long postganglionic fibers? sympathetic
in the sympathetic system, the heart rate and blood pressure___, raises
deep breathing, dry mouth, cold sweaty skin & dilated pupils are from the: sympathetic system
this is known as the "rest & digest" system. parasympathetic
parasympathetic ganglia is found near: effector organs
parasympathetic is not in: blood vessels
this system slows heart rate down, increases stomach & consists of constructed pupils. parasympathetic
craniosacral nerves is numbered __ which is nerves: S2-S4 : 3,7, 9. 10
when axons branch, they are called: collateral
the parasympathetic system has short __ and long ___ postganglionic - preganglionic
thoracolumbar are numbered: T1 - L2
4 cranial nerves involved in parasympathetic system oculomotor(III), facial(VII), glossopharygneal(IX) & vagus(X)
the dorsal root ganglion cell body contains: cell bodies of afferent neurons
autonomic root ganglion contains: cell bodies of efferent neurons
the 2 type of ACh receptors are: nicotinic & muscarinic
nicotinic is found in __ muscles skeletal
muscarinic is found in __ muscles cardiac
nicotinic is ___
muscarinic is
with nicotinic , blood pressure ___ rises
the parasympathetic & sympathetic system differs in: sites of origin & length of fibers
parasympathetic originates in the __ and ___, making it ___ brain & spinal cord - craniosacral
sympathetic originates in the ___ and ___ region, making it ___ thoracic & lumbar - thoracolumbnar
neurotransmitters are what: neurons use to communicate with its effector organs
receptors receive: neurotransmitters
fibers are: axons that release neurotransmitters
what is a synapse? a space btw 2 nerves
preganglionic before the ganglion
postganglionic after ganglionic
preganglionic fibers release: ACh
postganglionic fibers release: NE
the reflexes for urination, ejaculation and discharge of feces are found here. spinal cord
hypothalamus overall integration of ANS - the "boss"
what is cortical control?
what exerts the most influence on the ANS? brain stem
the brain stem regulates: pupil size, airflow, blood pressure and heart
Created by: Mariahj25