Exam (elaborations)
RHSC 420 Midterm Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
- Course
- Institution
RHSC 420 Midterm Exam | Questions And Answers Latest {} A+ Graded | 100% Verified
[Show more]
Content preview
RHSC 420 Midterm Exam | Questions And Answers Latest {2024- 2025} A+ Graded |100% Verified
What is the corticospinal tract responsible for? - Voluntary motor activity (descending)
Where do the fibers of the of the lateral corticospinal tract cross the midline? - At the pyramidal
decussation in the caudal medulla
What are the bundles of fibers that connect the brain stem and the cerebellum? - The cerebellar
peduncles located in the pons (inferior, middle, and superior)
What is the pontine nuclei? - 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? - The paired red nuclei (involved in motor coordination)
Which cranial nerves are purely sensory? - I, II, VIII
Which cranial nerves are purely motor? - III, IV, VI, XI, XII
Which motor nerves are mixed? - V, VII, IX, X
Where does the trigeminal nerve emerge from? - The mid pons
Where does the opthalmic division of trigeminal exit the skull? - Through the superior orbital fissure
Where does the maxillary division of trigeminal exit the skull? - Through the foramen rotundum
Where does the mandibular division of trigeminal exit the skull? - Foramen ovale
,Where does motor innervation for the muscles of mastication come from (be specific)? - The mandibular
division of trigeminal
What 5 types of information are carried by all three divisions of trigeminal? - Pain
Temperature
Discriminative touch
Vibration
Proprioception
Where do the fibers of trigeminal cross over? - In the brain stem
What nucleus of CN V is associated with pain and temperature? - The spinal trigeminal tract nucleus
Which nucleus of CN V is associated with discriminative touch and vibration? - The chief nucleus of V
What special visceral efferent (SVE) fibers are carried by CN V? - 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? - 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? - Through the trigeminal lemniscus
How does information (pain and temperature) from the spinal nucleus of CN V reach the VPM of the
thalamus? - Through the trigeminothalamic tract
What type of fibers are associated with the alar plate? - Afferent (all four kinds)
What type of fibers are associated with the basal plate? - Efferent (all three kinds)
, What afferents are carried by CN VII? - 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? - Special visceral efferents (SVE) to the muscles of facial expression
General visceral efferents (GVE) to the sublingual/submandibular glands and the lacrimal gland
Where do the LMN's for the upper face receive innervation from? - Bilaterally from both sides of the
cortex (redundant innervation)
Where do the LMN's for the lower face receive innervation from? - Unilaterally from the contralateral
side of the cortex
What are the symptoms of an upper motor neuron lesion of the facial nerve (motor)? - Innervation to
the lower face on the contralateral side is lost, but the upper face would remain intact because of the
bilateral innervation
What are the symptoms of a lower motor neuron lesion to the facial nerve (motor)? - Loss of
innervation to both the upper and lower face (secondary neurons, running together are damaged)
What is neurulation? - When the neural tube starts to close and neural cells migrate away from neural
crest
What is one factor that may contribute to neural tube defects? - Folic acid deficiency
What is a ganglion? - a collection of cell bodies outside the CNS (the DRG sensory cell bodies for
example)
What type of information do general somatic afferent fibers carry? - discriminative touch,
proprioception, pain, temperature from skin, joints, and muscles
What type of information is carried by general visceral afferents? - sensation from the viscera
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller oneclass. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.48. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75619 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now