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42 Cards in this Set
- Front
- Back
Which cranial nerves exit the Medulla Oblongata?
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CN IX, X, XI, XII.
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What cranial nerve is indicated by the orange arrow?
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CN IX, the Glossopharyngeal Nerve.
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What cranial nerve is indicated by the orange arrow?
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CN X, the Vagus Nerve.
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What cranial nerve is indicated by the orange arrow?
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CN XI, the Spinal Accessory Nerve.
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What cranial nerve is indicated by the orange arrow?
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The Trigeminal Nerve, CN V
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What cranial nerve is indicated by the orange arrow?
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CN IV, the Abducens Nerve
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What is the function of the Glossopharyngeal Nerve (CN IX)?
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CN IX conveys general and taste sensation from the posterior 1/3 of the tongue, and innervates the pharyngeal muscles and the parotid gland.
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Where does CN IX exit the brainstem?
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The Glossopharyngeal Nerve exits the Medulla Oblongata just caudal to its junction with the Pons and dorsal to the Inferior Olive.
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Which cranial nerves exit the Pons?
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CNs V, VI, VII, VIII.
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Which cranial nerves exit the Mesencephalon?
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CNs III, IV
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What structure is indicated by the blue arrow?
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The Basilar Pons (or just pons)
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What does the anterior surface of the Pons consist of?
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Transversely arranged fibers which arise as axons of neurons in the pontine nuclei.
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What structure is indicated by the blue arrow?
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The Vagal Trigone
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What structure is indicated by the blue arrow?
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The Hypoglossal Trigone
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What structure is indicated by the blue arrow?
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The Decussation of the Pyramids
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What structure is indicated by the blue arrow?
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The Olive
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What structure is indicated by the blue arrow?
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An Inferior Cerebellar Peduncle.
It's located adjacent to the fourth ventricle and projects into the cerebellum. |
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What are the Inferior Cerebellar Peduncles composed of?
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They consist chiefly, but not exclusively, of pathways afferent to the cerebellum.
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What structure is indicated by the blue arrow?
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The Nucleus Gracilis (Gracile Tubercle)
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What structure is indicated by the blue arrow?
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The Fasciculus Gracilis
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What information is carried by the fasciculi gracilis and cuneatus?
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They transfer information concerning proprioception, fine touch and vibration sense.
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What structure is indicated by the blue arrow?
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The Fasciculus Cuneatus
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What structure is indicated by the blue arrow?
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The Nucleus Cuneatus (Cuneate Tubercle)
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What nerve is indicated by the blue arrow?
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The Trigeminal Nerve (CN V)
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Where does CN V arise?
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From the region where the fibers of the Basilar Pons become continuous with the Middle Cerebellar Peduncle.
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What does CN V supply?
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It supplies motor innervation to the muscles of mastication and sensory innervation to the structures of the face and mouth.
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What nerve is indicated by the blue arrow?
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The Abducens Nerve (CN VI)
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What nerve is indicated by the blue arrow?
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The Facial Nerve (CN VII)
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What nerve is indicated by the blue arrow?
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The Vestibulo-cochlear Nerve (CN VIII) (also called the Auditory Nerve)
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What nerve is indicated by the blue arrow?
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The Oculomotor Nerve (CN III)
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What nerve is indicated by the blue arrow?
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The Trochlear Nerve (CN IV)
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What nerve is indicated by the blue arrow?
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The Trochlear Nerve (CN IV)
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What structure is indicated by the blue arrow?
What is it involved with? |
One of the Superior Colliculi of the Corpora Quadrigemina.
It's involved with mediating visual reflexes. |
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What structure is indicated by the blue arrow?
What is it involved in? |
One of the Inferior Colliculi.
It is involved with the auditory pathway. |
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What is the function of the Abducens Nerve?
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It provides motor innervation to the lateral rectus muscle of the eye.
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What structure is indicated by the blue arrow?
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The Facial Colliculus.
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What does the Facial Nerve innervate?
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It provides taste to the anterior 2/3 of the tongue and motor innervation to the muscles of facial expression (among other things).
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What is the function of the Vestibulocochlear Nerve?
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The Vestibular Root conveys information of balance and the position of the head.
The Cochlear Root mediates hearing. |
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What area is indicated by the blue arrow?
Why is it important? |
The Vestibular Area
It overlies the location of the vestibular nuclei. |
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What structure is indicated by the blue arrow?
What does it do? |
The Middle Cerebellar Peduncle
It conveys information to the cerebellum derived from the cerebral cortex. |
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What structure is indicated by the blue arrow?
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The Superior Cerebellar Peduncle
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What type of information is carried on the Superior Cerebellar Peduncle?
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It largely carries efferent fibers from the Cerebellum.
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