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Autonomic Nervous System

Ch.15
STUDY
PLAY
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