Exam 7: The Peripheral Nervous System: Efferent Division

Indicate which part of the autonomic nervous system is being described by writing the appropriate letter in the blank using the following answer code. a.sympathetic nervous system b.parasympathetic nervous system c.both sympathetic and parasympathetic nervous system d.neither sympathetic nor parasympathetic nervous system -Releases neurotransmitter that binds to nicotinic receptors

Atropine ____ the effect of acetylcholine at ____ receptors and ____ ____ receptors.

The preganglionic fibers of the autonomic nervous system are cholinergic fibers.

Compare and contrast the various types of autonomic receptors.

Indicate which type of neuron is associated with the characteristic by writing the appropriate letter in the blank using the answer code below. a.afferent and efferent neurons and interneurons b.afferent and efferent neurons c.afferent neurons d.efferent neurons e.interneurons f.none of the neurons -Alpha motor neurons are this type

Botulism is caused by a toxin from bacteria in the species

Indicate whether the following autonomic anatomical and physiological features pertain to a.the parasympathetic division b.the sympathetic division c.both parasympathetic and sympathetic divisions d.neither parasympathetic nor sympathetic divisions -Fibers originate from sacral nerves

Which effector is not dually innervated?

The effector for the neuron labeled 3

Indicate the proper sequence of events at the neuromuscular junction by filling in the blank with the appropriate number from 2 through 7.Numbers 1 and 8 are already identified. _____ACh is relensed fram the axan terminal by exacytosis. _____An Epp takes place, primariy as a result af $\mathrm { Na } ^ { + }$ influx. ______Acetylcholinesterase inactivates ACh, terminating activity at the neuramuscular $\underline {8} junction$ $\underline1$$\text { An action potential is propagated to an axon termunal of a motor neuron. }$ _______Channels that permit passage of $\mathrm { Na } ^ { + }$ and $\mathrm { K } ^ { + }$ are apened in the motar end plate. _______ $\mathrm { Ca } ^ { 2 + }$ channels are opened in the axon terminal. ________Local current flow between the motor end plate and adjacent ________muscle-cell membrane initiates an action potential that spreads throughout the muscle fiber. _______ACh binds with receptor sites an the motor end plate.

Which is not characteristic of sympathetic pathways?

Indicate which part of the autonomic nervous system is being described by writing the appropriate letter in the blank using the following answer code. a.sympathetic nervous system b.parasympathetic nervous system c.both sympathetic and parasympathetic nervous system d.neither sympathetic nor parasympathetic nervous system -Preganglionic fiber secretes norepinephrine

Indicate which type of neuron is associated with the characteristic by writing the appropriate letter in the blank using the answer code below. a.afferent and efferent neurons and interneurons b.afferent and efferent neurons c.afferent neurons d.efferent neurons e.interneurons f.none of the neurons -Carry information to the central nervous system

Activation of ______ receptors usually brings about _______.

Select the CNS structure(s) that can influence autonomic activity.

All cholinergic and some adrenergic receptors are coupled to G proteins.

Inhibition of skeletal muscles occurs when a certain neurotransmitter causes IPSPs to develop at the neuromuscular junctions.

Action potentials are initiated at the motor end-plate region of skeletal muscle fibers.

Binding of ACh to all muscarinic receptors is excitatory, but binding of Ach to nicotinic receptors may be excitatory or inhibitory.

Action potentials are transmitted on a one-to-one basis at both a neuromuscular junction and a synapse.