45 Questions
Which division of the autonomic nervous system is responsible for innervating the cardiovascular system?
Sympathetic
What is the primary function of the autonomic efferent pathway?
Motor control
Where are the cell bodies of the preganglionic neurons located in the autonomic efferent pathway?
Central nervous system
Which division of the autonomic nervous system supplies blood vessels in the body?
Sympathetic division
What is the main effect of parasympathetic innervation on the heart?
Decrease heart rate
What is the main effect of sympathetic innervation on blood vessels?
Constriction
What are perivascular nerves?
Nerves that run along blood vessels
Which vertebral level does the vagus nerve pass through the diaphragm with the esophagus?
T10
Which type of fiber carries autonomic (visceral or involuntary) motor signals?
GVE
Which cranial nerve supplies skeletal muscles of the palate, pharynx, and larynx?
Vagus nerve
Which cranial nerve contains both motor and sensory fibers?
Glossopharyngeal nerve
Which nerve supplies structures in the head and neck as far inferiorly as the lower pharynx?
Glossopharyngeal nerve
Which fibers of the glossopharyngeal nerve carry somatic sensations from the skin of the external ear and oropharynx?
GSA
Which fibers of the glossopharyngeal nerve carry taste fibers from the posterior 1/3 of the tongue?
SVA
Which of the following accurately describes the pathway of GVA fibers from the heart to the spinal gray matter?
They run from peripheral to central, following sympathetic pathways until they reach the dorsal horn of the spinal cord.
What is the most likely dermatome(s) to produce discomfort in cases of cardiac distress?
T1-5
Which pathway do GVA fibers from the T3 spinal level take to run from the heart to the spinal gray matter?
Sympathetic pathway
What pathway do monitoring fibers from the heart take to reach the CNS?
Cranial nerves IX and X
Which of the following accurately describes the sympathetic supply to the heart?
The sympathetic fibers originate from spinal levels T1-5 and synapse in the stellate ganglion or middle cervical ganglion before reaching the heart.
Where do the cardiopulmonary splanchnic nerves synapse in the sympathetic chain?
At the same spinal level where they originate.
What is the location of the cardiac plexus?
Below the aortic arch and anterior to the right pulmonary artery.
What is referred pain?
Pain felt at a site other than the actual anatomical location of the problem.
Which vertebral level does the vagus nerve pass through the diaphragm with the esophagus?
T10
Which cranial nerve supplies skeletal muscles of the palate, pharynx, and larynx?
Vagus nerve
What is the main effect of parasympathetic innervation on the heart?
Decreased heart rate
What is referred pain?
Pain that is felt in a different location than its actual source
Which cranial nerve contains both motor and sensory fibers?
Glossopharyngeal nerve
Which fibers of the glossopharyngeal nerve carry taste fibers from the posterior 1/3 of the tongue?
SVA fibers
What is the function of the carotid body?
To act as an arterial chemoreceptor
Where are the cell bodies of the preganglionic parasympathetic neurons that innervate the parotid salivary gland located?
Otic ganglion
Which spinal levels do the cardiopulmonary splanchnic nerves originate from?
T1-T5
Where do the cardiopulmonary splanchnic nerves synapse in the sympathetic chain?
At their same spinal level
What is the location of the cardiac plexus?
Base of the heart
What is the function of sympathetic fibers in the cardiac plexus?
Increase rapidity and strength of heartbeat
Which of the following accurately describes the pathway of the vagus nerve in the thorax?
It descends from the carotid sheath to enter the superior mediastinum and runs superficial to the arch of the aorta.
Which nerve supplies blood vessels and lymphatic vessels in the body?
Perivascular nerves
What is the main effect of sympathetic innervation on blood vessels?
Constriction of blood vessels
Which division of the autonomic nervous system supplies the heart?
Both parasympathetic and sympathetic divisions
Which of the following accurately describes the autonomic efferent pathway in the cardiovascular system?
Consists of preganglionic neurons located in the CNS, peripheral ganglion, and target organ
What is the main function of the autonomic efferent pathway in the cardiovascular system?
To supply smooth muscle, glands, and specialized cardiac muscle
Which of the following accurately describes the sympathetic and parasympathetic innervation of the cardiovascular system?
Sympathetic innervation originates from the CNS and has specific effects on target organs, while parasympathetic innervation originates from the PNS and has general effects on target organs
Which of the following accurately describes the pathway of GVA fibers from the heart to the spinal gray matter?
GVA fibers from the heart travel along sympathetic pathways without synapsing in the sympathetic chain, then enter the dorsal root to reach the spinal gray matter.
What dermatomes are most likely to produce discomfort in cases of cardiac distress?
T1-5
What pathway do GVA fibers from the T3 spinal level take to run from the heart to the spinal gray matter?
GVA fibers from the T3 spinal level travel along sympathetic pathways without synapsing in the sympathetic chain, then enter the dorsal root to reach the spinal gray matter.
What pathway would monitoring fibers take from the heart to the CNS?
Monitoring fibers from the heart would travel along sympathetic pathways and synapse in the sympathetic chain before entering the dorsal root to reach the CNS.
Test your knowledge on the branches and functions of the Glossopharyngeal Nerve (Cranial Nerve IX) in this informative quiz. Learn about its motor and sensory fibers, its exit point from the CNS, and the structures it supplies in the head and neck. Challenge yourself to identify the various branches of this important nerve.
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