A&P 1 Chapter 16 Review
Given these phrases: (1) neuron cell bodies in the nuclei of cranial nerves (2) neuron cell bodies in the lateral gray horn of the spinal cord (T1-L2 and S2-S4) (3) two synapses between the CNS and effectors (4) regulates smooth muscle Which of the phrases are true for the autonomic nervous system?
1,2,3,4
Given these structures: (1) collateral ganglion (2) sympathetic chain ganglion (3) white ramus communicans (4) splanchnic nerve Choose the arrangement that lists the structures in the order an action potential travels through them on the way from a spinal nerve to an effector.
3,2,4,1
Which of these events is expected if the sympathetic division is activated?
Air passageways dilate.
Which of the following statements concerning the preganglionic neurons of the ANS is true?
All parasympathetic preganglionic neurons secrete acetylcholine.
When acetylcholine binds to nicotinic receptors,
Na+ channels open.
Which of the following statements regarding the adrenal gland is true?
The sympathetic division stimulates the adrenal gland to release epinephrine.
Which of these structures is innervated almost exclusively by the sympathetic division?
blood vessels
The sympathetic division
generally opposes the actions of the parasympathetic division.
Splanchnic nerves
have preganglionic neurons that synapse in the collateral ganglia.
A sudden increase in blood pressure
initiates a parasympathetic reflex that decreases heart rate.
The parasympathetic division
is also called the craniosacral division. has preganglionic axons in cranial nerves. has preganglionic axons in pelvic splanchnic nerves. has ganglia near or in the wall of effectors.
Sympathetic axons reach organs through all of the following except
pelvic splanchnic nerves.
Nicotinic receptors are located in
postganglionic neurons of the parasympathetic division. postganglionic neurons of the sympathetic division. membranes of skeletal muscle cells.
The white ramus communicans contains
preganglionic sympathetic fibers.
Which of these is not a part of the enteric nervous system?
somatic motor neurons
The cell bodies of the postganglionic neurons of the sympathetic division are located in the
sympathetic chain ganglia. collateral ganglia.
Which of these cranial nerves does not contain parasympathetic fibers?
trigeminal (V)