Exam 7: The Peripheral Nervous System: Efferent Division

Polio is the most common motor neuron disease.

Most innervated blood vessels receive sympathetic and parasympathetic fibers.

Compare and contrast the divisions of the autonomic nervous system with reference to the following: (1) the alternate names for each divisions; (2) where their neurons exit the CNS; (3) anatomical differences between their preganglionic and postganglionic neurons; and (4) the specific neurotransmitters released from the neurons in part 3.

Indicate the characteristics of the types of autonomic receptors using the following answer code: a.nicotinic receptors b.muscarinic receptors c.alpha receptors d.beta-1 receptors e.beta-2 receptors f.alpha-1 and beta-1 receptors g.muscarinic, alpha, beta-1, and beta-2 receptors -Activation of this type of adrenergic receptor is generally inhibition

The sympathetic nervous system

A drop in blood glucose concentration would likely cause

Sympathetic postganglionic fibers are longer than parasympathetic postganglionic fibers.

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 -Has neurons that display adrenergic receptors

Parasympathetic postganglionic fibers

Binding of neurotransmitter to which of the following receptors on an effector would likely cause inhibition of the effector?

Most innervated blood vessels receive only sympathetic nerve fibers.

The sympathetic nervous system has its cells of origin in the brain stem as well as the spinal cord.

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 -Release neurotransmitter from their dendrites

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 -Autonomic neurons are this type

Only terminals of autonomic nerve fibers and motor neurons end in a single, enlarged knoblike structure that releases neurotransmitter.

Match the chemical with correct characteristic. a.myasthenia gravis b.black widow spider venom c.curare d.Clostridium botulinum toxin e.organophosphates -Blocks release of ACh.

Sympathetic __________ to a particular organ exists when the sympathetic stimulation of that organ increases above tone level.

Most sympathetic postganglionic fibers secrete the neurotransmitter ____________________, whereas all parasympathetic postganglionic fibers secrete the neurotransmitter ____________________.

Indicate the characteristics of the types of autonomic receptors using the following answer code: a.nicotinic receptors b.muscarinic receptors c.alpha receptors d.beta-1 receptors e.beta-2 receptors f.alpha-1 and beta-1 receptors g.muscarinic, alpha, beta-1, and beta-2 receptors -Activation of this type of adrenergic receptor is usually excitation

The final common pathway relates to the ability of the nervous system to affect skeletal muscles via motor neurons.