18 Questions
What is the function of the dorsal root ganglion?
It contains the nerve cell bodies of sensory neurons coming from the body
How many spinal nerves are in the thoracic region?
12
What is the mnemonic for the branches of the posterior cord of the brachial plexus?
ULTRA - Upper subscapular, Lower subscapular, Thoracodorsal, Radial, Axillary
Which plexus is formed by the spinal nerves C5 through T1?
Brachial plexus
What is the function of the ventral root?
It carries motor information from the anterior gray horn and innervates muscles
Which spinal nerves form the cervical plexus?
First 5 cervical nerves
What is the function of the brainstem?
Permitting voluntary movements smoothly
Which structure connects the narrow spinal cord with the forebrain?
Medulla oblongata
Which nerve emerges between the pyramid and the olive, crosses the posterior cranial fossa, and leaves the skull through a specific canal?
Hypoglossal nerve
Which nerve is involved in the sense of smell?
Olfactory nerve
Which nerve is known as the 'motor nerve'?
Hypoglossal nerve
Which structure is not part of the meninges covering of the brain?
Gray matter
What is the primary function of dermatomes?
To assess spinal cord damage by mapping skin sensation
Which muscle is innervated by the common fibular nerve?
Biceps femoris (short head)
Which of the following is NOT a function of the parasympathetic division of the autonomic nervous system?
Pupil dilation
Which division of the autonomic nervous system controls the resting state of the body?
Parasympathetic division
Which part of the central nervous system do the sacral segments of the parasympathetic division originate from?
Sacral spinal cord
Which of the following structures is NOT innervated by the cranial segments of the parasympathetic division?
Skeletal muscles
Test your knowledge on the internal arrangement of gray and white matter in the spinal cord, as well as the structure and function of spinal nerves. Topics include gray and white matter distribution, spinal nerve composition, and dorsal root ganglion.
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