RHSC 420 Midterm Questions with 100% Correct Answers
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Course
RHSC 420/421
Institution
RHSC 420/421
RHSC 420 Midterm Questions with 100% Correct Answers
What is the corticospinal tract responsible for? - Answer️️ -Voluntary
motor activity (descending)
Where do the fibers of the of the lateral corticospinal tract cross the
midline? - Answer️️ -At the pyramidal decussation in the caudal...
RHSC 420 Midterm Questions with 100% Correct Answers
What is the corticospinal tract responsible for? - Answer✔️✔️-Voluntary
motor activity (descending)
Where do the fibers of the of the lateral corticospinal tract cross the
midline? - Answer✔️✔️-At the pyramidal decussation in the caudal medulla
What are the bundles of fibers that connect the brain stem and the
cerebellum? - Answer✔️✔️-The cerebellar peduncles located in the pons
(inferior, middle, and superior)
What is the pontine nuclei? - Answer✔️✔️-The nuclei of the brain stem
involved in motor activity (associated with the corticospinal and
corticobulbar tracts)
When looking at a cross section of the brain stem, what feature can be used
as a landmark for the midbrain? - Answer✔️✔️-The paired red nuclei
(involved in motor coordination)
Which cranial nerves are purely sensory? - Answer✔️✔️-I, II, VIII
Which cranial nerves are purely motor? - Answer✔️✔️-III, IV, VI, XI, XII
Which motor nerves are mixed? - Answer✔️✔️-V, VII, IX, X
Where does the trigeminal nerve emerge from? - Answer✔️✔️-The mid pons
Where does the opthalmic division of trigeminal exit the skull? -
Answer✔️✔️-Through the superior orbital fissure
Where does the maxillary division of trigeminal exit the skull? -
Answer✔️✔️-Through the foramen rotundum
Where does the mandibular division of trigeminal exit the skull? -
Answer✔️✔️-Foramen ovale
Where does motor innervation for the muscles of mastication come from
(be specific)? - Answer✔️✔️-The mandibular division of trigeminal
What 5 types of information are carried by all three divisions of trigeminal?
- Answer✔️✔️-Pain
Temperature
Discriminative touch
Vibration
Proprioception
Where do the fibers of trigeminal cross over? - Answer✔️✔️-In the brain
stem
What nucleus of CN V is associated with pain and temperature? -
Answer✔️✔️-The spinal trigeminal tract nucleus
Which nucleus of CN V is associated with discriminative touch and
vibration? - Answer✔️✔️-The chief nucleus of V
What special visceral efferent (SVE) fibers are carried by CN V? -
Answer✔️✔️-Motor innervation to the muscles of mastication (recall that the
head does not develop embryologically from somites)
Where is the chief nucleus of V located within the mid pons? - Answer✔️✔️-
On either side of the ventricle, anterior and slightly lateral to the two
darker hamburger shaped structures
How does information (discriminative touch and vibration) from the chief
sensory nucleus of V reach the VPM of the thalamus? - Answer✔️✔️-
Through the trigeminal lemniscus
How does information (pain and temperature) from the spinal nucleus of
CN V reach the VPM of the thalamus? - Answer✔️✔️-Through the
trigeminothalamic tract
What type of fibers are associated with the alar plate? - Answer✔️✔️-
Afferent (all four kinds)
What type of fibers are associated with the basal plate? - Answer✔️✔️-
Efferent (all three kinds)
What afferents are carried by CN VII? - Answer✔️✔️-General somatic
afferent (GSA) from the skin behind the ear
Special visceral afferent (SVA), taste from the anterior 2/3rds of the tongue
What efferents are carried by CN VII? - Answer✔️✔️-Special visceral
efferents (SVE) to the muscles of facial expression
General visceral efferents (GVE) to the sublingual/submandibular glands
and the lacrimal gland
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