A+P II CH 16 HW

Which of the following statements concerning the parasympathetic division of the autonomic nervous system is false?

Preganglionic fibers are relatively short and postganglionic fibers are relatively long.

During ________ sleep, dreaming occurs.

REM

Collateral ganglia contain neurons that innervate tissues and organs in which cavity?

abdominopelvic

A decrease in the autonomic tone of the smooth muscle in a blood vessel would result in

an increase in blood flow through the vessel.

Nerve networks that include both sympathetic and parasympathetic fibers that reach the same structure are called

autonomic plexuses.

The ganglia located lateral to the vertebral column are part of the sympathetic

chain

Stimulation of the beta receptors on heart muscle cells results in

increased heart rate and force of contraction.

A doctor places drops in the eyes to dilate the pupils for an examination. The type of drug that is used is a(n) ________ drug. 1. sympathomimetic 2. parasympathomimetic 3. adrenergic activating 4. cholinergic activating

1, 3

Which of these is NOT a similarity between the parasympathetic and sympathetic nervous systems?

Both use norepinephrine.

When reviewing the general functions of the parasympathetic division, which of the following statements best summarizes the physiologic outcome?

The parasympathetic division works at counterbalancing the sympathetic division by conserving energy and lowering metabolic rate.

Damage to the glossopharyngeal nerve would likely cause

a reduction in saliva.

Specialized ganglionic sympathetic neurons that release hormones into the bloodstream are found within the

adrenal medullae.

If the receptor on the postsynaptic membrane binds to norepinephrine, the synapse is called

adrenergic.

Dual innervation refers to an organ receiving

both sympathetic and parasympathetic innervation.

Preganglionic neurons of the autonomic nervous system are located in

both the brainstem and the lateral gray horns of the spinal cord.

Which response is NOT part of sympathetic activation?

decreased muscle tone

Preganglionic fibers leave the CNS and then synapse on

ganglionic neurons.

As the result of an accident, the white rami communicantes of spinal nerves T1 and T2 on the left side of Brad's body are severed. What organ(s) would you expect to be affected by this injury?

left pupil and heart

Conversion of a short-term memory to a long-term memory is called

memory consolidation.

The regulation of awake-asleep cycles appears to involve an interplay between brain stem nuclei that use different neurotransmitters. The one that favors alertness is ________ and the other promoting deep sleep is ________.

norepinephrine; serotonin

In which system are the ganglia in or near the target organ?

parasympathetic division of the ANS

A visceral motor neuron whose cell body is within the CNS is called a(n)________ neuron.

preganglionic

During deep sleep, which of these changes is/are NOT normally observed?

rapid eye movements

Sympathetic preganglionic fibers are ________ and have ________ axons.

short; myelinated

Which of the following is NOT an example of a visceral reflex?

tendon reflex

Long-term memories that are with you for a lifetime are called ________ memories.

tertiary

The statement "Preganglionic axon terminals release acetylcholine" is

true for both the parasympathetic and sympathetic nervous systems.

The statement "It initiates contraction of urinary bladder smooth muscle" is

true only for the parasympathetic nervous system.

Postganglionic axons usually are

unmyelinated

Sympathetic axon terminals form a branching network of swollen segments called

varicosities.