Question 1
Question
Which muscles are innervated by CN III - Occulomotor n.?
Answer
-
Medial Rectus m.
-
Superior Rectus m.
-
Inferior Rectus m.
-
Inferior Oblique m.
-
Superior Oblique m.
-
Lateral Rectus m.
Question 2
Question
Which muscles are innervated by CN IV - Trochlear n.?
Answer
-
Superior Oblique m.
-
Lateral Rectus m.
-
Medial Rectus m.
-
Superior Rectus m.
-
Inferior Rectus m.
-
Inferior Oblique m.
Question 3
Question
Which muscles are innervated by CN VI - Abducens n.?
Answer
-
Lateral Rectus m.
-
Medial Rectus m.
-
Superior Rectus m.
-
Inferior Rectus m.
-
Inferior Oblique m.
-
Superior Oblique m.
Question 4
Answer
-
Medial Rectus m.
-
Inferior Rectus m.
-
Superior Rectus m.
-
Inferior Oblique m.
-
Superior Oblique m.
-
Lateral Rectus m.
Question 5
Question
Depression and Extorsion;
Depression increases with AB-Duction
Answer
-
Inferior Rectus m.
-
Medial Rectus m.
-
Superior Rectus m.
-
Inferior Oblique m.
-
Superior Oblique m.
-
Lateral Rectus m.
Question 6
Question
Elevation and Intorsion;
Elevation Increases with AB-Duction
Answer
-
Superior Rectus m.
-
Inferior Rectus m.
-
Medial Rectus m.
-
Inferior Oblique m.
-
Superior Oblique m.
-
Lateral Rectus m.
Question 7
Question
Elevation and Extorsion;
Elevation increases with AD-Duction
Answer
-
Inferior Oblique m.
-
Superior Oblique m.
-
Lateral Rectus m.
-
Medial Rectus m.
-
Inferior Rectus m.
-
Superior Rectus m.
Question 8
Question
Depression and Intorsion;
Depression increases with AD-Duction
Answer
-
Superior Oblique m.
-
Lateral Rectus m.
-
Medial Rectus m.
-
Inferior Rectus m.
-
Superior Rectus m.
-
Inferior Oblique m.
Question 9
Answer
-
Lateral Rectus m.
-
Medial Rectus m.
-
Inferior Rectus m.
-
Superior Rectus m.
-
Inferior Oblique m.
-
Superior Oblique m.
Question 10
Question
Oculomotor Palsy is characterized by which form of double vision?
Answer
-
Diagonal Diplopia
-
Vertical Diplopia
-
Horizontal Diplopia
Question 11
Question
Trochlear Palsy is characterized by which form of double vision?
Answer
-
Vertical Diplopia
-
Diagonal Diplopia
-
Horizontal Diplopia
Question 12
Question
Abducens Palsy is characterized by which form of double vision?
Answer
-
Horizontal Diplopia
-
Diagonal Diplopia
-
Vertical Diplopia
Question 13
Question
Label the Image depicting the pathways controlling horizontal eye movements.
Question 14
Question
What are the symptoms of Lesion 1?
Answer
-
R Abducens Palsy
-
R Lateral Gaze Palsy
-
Left INO
-
1 1/2 Syndrome
Question 15
Question
What are the symptoms of Lesion 2?
Answer
-
R Abducens Palsy
-
R Lateral Gaze Palsy
-
Left INO
-
1 1/2 Syndrome
Question 16
Question
What are the symptoms of Lesion 3?
Answer
-
R Abducens Palsy
-
R Lateral Gaze Palsy
-
Left INO
-
1 1/2 Syndrome
Question 17
Question
What are the symptoms of Lesion 4?
Answer
-
R Abducens Palsy
-
R Lateral Gaze Palsy
-
Left INO
-
1 1/2 Syndrome
Question 18
Question
What are the symptoms of Lesion 5?
Answer
-
R Abducens Palsy
-
R Lateral Gaze Palsy
-
Left INO
-
1 1/2 Syndrome
Question 19
Question
The nuclei located in the Upper Midbrain at the level of the Superior Colliculi and Red Nuclei, just ventral to the Periaqueductal Gray Matter is called the [blank_start]Oculomotor[blank_end] Nuclei and corresponds to CN [blank_start]III[blank_end].
Answer
-
Oculomotor
-
Trochlear
-
Abducens
-
III
-
IV
-
VI
Question 20
Question
The nuclei located in the Lower Midbrain at the level of the Inferior Colliculi and the decussation of the Superior Cerebellar Peduncle is the [blank_start]Trochlear[blank_end] Nuclei which corresponds with CN [blank_start]IV[blank_end].
Answer
-
Trochlear
-
Oculomotor
-
Abducens
-
IV
-
III
-
VI
Question 21
Question
The nucleus located in the Floor of 4th Ventricle under the Facial Colliculi in the Mid-to-lower Pons is the [blank_start]Abducens[blank_end] Nucleus which corresponds to CN [blank_start]VI[blank_end].
Answer
-
Abducens
-
Trochlear
-
Oculomotor
-
VI
-
III
-
IV
Question 22
Question
These are the possible causes of what condition?
-Mechanical problems (i.e. Orbital fracture)
-Disorders of the extraocular muscles (i.e. Thyroid disease)
-Disorders of the neuromuscular junction (i.e. Myasthenia gravis)
-Disorders of CN III, IV, VI and their pathways
Answer
-
Diplopia
-
Ptosis
-
Mydriasis
-
Horner’s Syndrome
-
Pseudoptosis
Question 23
Question
Patient presents with their left eye in the "Down and Out Position" and slight Ptosis.
Which CN do you immediately suspect is involved?
Question 24
Question
As you walk into the waiting room to greet a new patient, he turns his ahead away from you and tucks his chin to his chest.
Which is the most likely cause of this behavior?
Answer
-
Patient has Vertical Diplopia so he is trying to minimize the effect while focusing on you.
-
Patient is rather shy. Just give him some time to warm up to you.
-
Patient has Abducens Palsy so he is trying to minimize the effect while focusing on you.
-
Patient has Optokinetic Nystagmus and is trying to focus on you.
Question 25
Question
Which direction will a patient turn his head to minimize Horizontal Diplopia?
Answer
-
Toward the affected eye
-
Away from the affected eye
-
Head movements alone will not correct a Horizontal Diplopia
-
Away from the affected eye with the chin tucked to the chest
Question 26
Question
For Mydriasis [blank_start]Sympathetic[blank_end] Activation causes Contraction of the Pupillary [blank_start]Dilator[blank_end] Muscle and [blank_start]Parasympathetic[blank_end] Relaxation causes Relaxation of the Pupillary [blank_start]Sphincter[blank_end] Muscle.
Answer
-
Dilator
-
Sphincter
-
Sphincter
-
Dilator
-
Sympathetic
-
Parasympathetic
-
Parasympathetic
-
Sympathetic
Question 27
Question
Miosis requires relaxation of the Sympathetic NS and activation of the Parasympathetic NS.
Question 28
Question
Miosis requires activation of the Sympathetic NS and relaxation of the Parasympathetic NS.
Question 29
Question
Mydriasis can be caused by which of the following?
Answer
-
Pupillary Light Reflex responding to decreased light entering the eye.
-
Pupillary Light Reflex responding to increased light entering the eye.
-
Accommodation Reflex
-
Parasympathetic Activation
Question 30
Question
The Accommodation Reflex...
Answer
-
occurs when an object being focused upon moves closer
-
occurs when an object being focused upon moves further away
-
is related to Mydriasis
-
is related to Pseudoptosis
-
is related to Ptosis
Question 31
Question
The following are possible causes for which condition?
-Horner’s Syndrome
-Oculomotor Palsy
-Myasthenia Gravis
Answer
-
Ptosis
-
Pseudoptosis
-
Miosis
-
Mydriasis
-
Optokinetic Nystagmus
Question 32
Question
Which of the following describe Optokinetic Nystagmus?
Answer
-
Allows the eye to follow objects in motion when the head remains stationary
-
Composed of slow eye movements in one direction interrupted repeatedly by fast, saccade-like eye movements in the opposite direction
-
Stabilizes the eyes on a visual image during head and body movements
-
Occurs normally
-
Indicative of CN III lesion
-
Indicative of CN VI lesion
Question 33
Question
[blank_start]Vestibulo-Ocular Reflex[blank_end] stabilizes the eyes on a visual image during head and body movements
Answer
-
Vestibulo-Ocular Reflex
-
Optokinetic Nystagmus
-
Pseudoptosis