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Ch.15

The centers for cardiac, digestive, and vasomotor functions are housed within the
-Brainstem
-Hypothalamus
-Spinal cord
-Cerebral cortex
-Cerebellum

Brainstem

In the brain, the ___ is the integration and command center for autonomic functions.
-Medulla
-Cerebral cortex
-Spinal cord
-Brainstem
-Hypothalamus

Hypothalamus

Which may be involved in an autonomic reflex?
-Cardiac muscle contraction
-Smooth muscle contraction
-Secretion by glands
-All of the choices are correct
-None of the choices is correct

All of the choices are correct

Which type of innervation causes the heart rate to increase?
-Parasympathetic
-Sympathetic

Sympathetic

Which type of innervation causes reduced blood flow to the digestive tract?
-Parasympathetic
-Sympathetic

Sympathetic

Which type of innervation causes pupil dilation?
-Parasympathetic
-Sympathetic

Sympathetic

Which autonomic plexus innervates viscera within the pelvic region?
-Esophageal plexus
-Pulmonary plexus
-Abdominal aortic plexus
-Hypogastric plexus
-Cardiac plexus

...

The first of the two ANS motor neurons is the ___ Neuron.
-Preganglionic
-Postganglionic
-Terminal
-Neuronal
-Posterior

Preganglionic

Which is not an effector innervated by the autonomic nervous system?
-Cardiac muscle
-Smooth muscle
-Glands
-Skeletal muscle
-No exceptions; all are effectors of the autonomies nervous system

Skeletal muscle

The two divisions of the autonomic nervous system, sympathetic and parasympathetic,
-Use preganglionic and postganglionic neurons to innervate skeletal muscle
-Contain autonomic ganglia to house ganglionic neurons
-Are voluntary
-Are composed of PNS structures only
-Function only during sleep

...

Which cranial nerves are associated with the parasympathetic division of the ANS?
a:III b:IV c:V d:VII e:IX f:X g:XII
-a,d,e,f
-b,c,d,e
-a,c,d,g
-c,d,f,g
-b,e,f,g

a, d, e, f

The preganglionic axons if CN III extend to the ___ ganglion.
-Pterygopalatine
-Submandibular
-Otic
-Pelvic
-Ciliary

Ciliary

The glossopharyngeal nerve innervates the
-Parotid salivary gland
-Large intestine
-Lacrimal gland
-Sublingual salivary gland
-Ciliary muscle

Parotid salivary gland

The CN that supp;its parasympathetic innervation to the thoracic organs is
-CN II
-CN III
-CN VI
-CN IX
-CN X

CN X

The sympathetic trunks are located
-Superior to the brachial plexus
-Inferior to the sacral plexus
-Immediately lateral to the vertebral column
-Lateral to prevertebral ganglia
-In the craniosacral regions

...

The preganglionic sympathetic neuron cell bodies are housed in the
-Anterior columns of the spinal cord
-Posterior columns of the spinal cord
-Sympathetic trunk
-Lateral horns of the T1-L2 segments of the spinal cord
-Paravertebral ganglia

Lateral horns of the T1-L2 segments of the spinal cord

Postganglionic sympathetic axons are carried from the sympathetic trunk to the spinal nerve by
-White rami communicantes
-Superior cervical ganglion
-Gray rami communicantes
-Splanchnic nerves
-Pterygopalatine ganglion

...

Why do asthma sufferers often use inhalers that contain sympathomimetics to ease their symptoms?
-Sympathomimetics suppress release of norepinephrine and epinephrine
-The drugs are antagonists that bind to adrenergic receptors in the bronchial tubes without stimulating them
-The drugs are agonists that stimulate adrenergic receptors in the bronchial tubes
-The sympathomimetics bind to muscarinic receptors and block them
-Sympathomimetics enhance the release of acetylcholine from preganglionic and postganglionic neurons

The drugs are agonists that stimulate adrenergic receptors in the bronchial tubes

What structure is supplied by postganglionic fibers originating in the ciliary ganglion?
-Liver
-Spleen
-Smooth muscle of the iris that constricts the pupil
-Parotid gland
-Submandibular salivary gland

Smooth muscle of the iris that constricts the pupil

Which nerve carries parasympathetic fiber to the parotid salivary gland?
-Trigeminal nerve (CN V)
-Facial nerve (CN VII)
-Glossopharyngeal nerve (CN IX)
-Vagus nerve (CN X)
-Oculomotor nerve (CN III)

Glossopharyngeal nerve (CN IX)

What condition is characterized by cyanosis and pain in the fingers due to extreme vasoconstriction in the digits resulting from excessive sympathetic stimulation?
-Horner syndrome
_Raynaud disease
-Orthostatic Hypertension
-Addison disease
-Mass reflex reaction

Raynaud disease

Which nerve carries over 90% of parasympathetic fibers?
-Glossopharyngeal
-Phrenic
-Pelvic splanchnic
-Vagus
-Facial

Vagus

What nerve(s) carries sympathetic fibers that increase heart rate and force of contraction?
-Phrenic nerve
-Vagus nerve
-Sympathetic nerves from the cervical ganglion
-Sympathetic nerves from the celiac ganglion
-Glossopharyngeal nerve

Sympathetic nerves from the celiac ganglion

Which part of the brain exerts the most control over the autonomic nervous system?
-The cerebral cortex
-The midbrain
-The hypothalamus
-The thalamus
-The medulla oblongata

The medulla oblongata

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