Somatic motor and autonomic pathways share all of the following except:
direction of impulse conduction
effectors located outside the CNS
number of neurons between the CNS and effector
acetylcholine as a possible neurotransmitter
Within the sympathetic chain ganglion, the preganglionic fiber may:
synapse with a sympathetic postganglionic neuron
send an ascending branch through the sympathetic trunk
pass through chain ganglia and synapse in a collateral ganglion
all of the above
Beta receptors bind with:
acetylcholine.
norepinephrine.
toxin muscaine.
none of the above
Which of the following is not an example of sympathetic stimulation?
decreased heart rate
decreased secretion of the pancreas
constriction of the urinary sphincters
dilation of skeletal muscle blood vessels
"Fight or flight" physiologic changes include all of the following except:
increased conversion of glycogen to glucose
constriction of respiratory airways
increased perspiration
dilation of blood vessels in skeletal muscles
The enteric nervous system is a specialized part of the ANS that controls visceral effectors in the gut wall.
Many autonomic effectors are dually innervated.
They sympathetic division is also called the thoracolumbar division.
They sympathetic division is the dominant controller of the body at rest.
Sympathetic responses are usually widespread, involving many organ systems at once.
Each efferent autonomic pathways is made up of , , and .
neurons conduct impulses from the brain stem or spinal cord to an autonomic ganglion.
Sympathetic ganglia located a short distance from the spinal cord are known as ganglia.
Some postganglionic axons return to a spinal nerve by way of a short branch called the gray .
Axon terminals of autonomic neurons release either acetylcholine or .
In the sympathetic division, preganglionic neurons are relatively short long( short, long ) and postganglionic neurons are relatively long short( long, short ).
Norepinephrine affects visceral effectors by first binding to adrenergic cholinergic( adrenergic, cholinergic ) receptors in their plasma membranes.
The effect of a neurotransmitter on any postsynaptic cell is determined by the characteristics of the receptor neurotransmitter( characteristics of the receptor, neurotransmitter ).
A nicotinic beta( nicotinic, beta ) receptor is a main type of cholinergic receptor.
The action of acetylcholine is quickly slowly( quickly, slowly ) terminated when hydrolyzed by the enzyme acetylcholinesterase
Both sympathetic and parasympathetic divisions are tonically active, meaning they continually conduct impulses to autonomic effectors.
Sympathetic impulses inhibit effectors and parasympathetic impulses stimulate effectors.
Autonomic centers function in a hierarchy in their control of the ANS, with the highest ranking being the autonomic centers in the cerebral cortex.
The sympathetic system plays a crucial role in maintaining blood pressure.
They sympathetic system dominates during "rest and repair".
❌: regulates body's involuntary effectors ❌: efferent neurons that make up the ANS ❌: conduct impulses between the spinal cord and a ganglion ❌: tissues to which autonomic neurons conduct impulses ❌: division of ANS ❌: voluntary actions
Dendrites and cell bodies of sympathetic preganglionic neurons are located in the:
brain stem and sacral portion of the spinal cord
sympathetic ganglia
gray matter of the thoracic and upper lumbar segments of the spinal cord
gnglia close to effectors
Which of the following is not correct?
Sympathetic preganglionic neurons have their cell bodies located in the lateral gray column of certain parts of the spinal cord
Sympathetic preganglionic axons pass along the dorsal root of certain spinal nerves
There are synapses within sympathetic ganglia
Sympathetic responses are usually widespread, involving many organs
Another name for the parasympathetic nervous system is:
thoracolumbar
craniosacral
visceral
ANS
cholinergic
Which statement is not correct?
Sympathetic postganglionic neurons have their dendrite and cell bodies in sympathetic ganglion or collateral ganglia.
Sympathetic ganglions are located in front of and at each side of the spinal column.
Separate autonomic nerves distribute many sympathetic postganglionic axons to various internal organs.
Very few sympathetic preganglionic axons synapse with postganglionic neurons.
constrict pupils
sympathetic control
parasympathetic control
bronchial relaxation
increases sweat secretion
increases secretion of digestive juices and insulin
constricts blood vessels
slows heartbeat
relaxes bladder
increases epinephrine secretion
increases peristalsis
contracts ciliary muscle to accommodate near vision