Lecture 20 Flashcards
Which of the following senses are NOT derived from ectoderm?
a. Sight
b. Taste
c. Sound
d. Balance
B. Taste
Which of the following senses is derived from endoderm?
a. Sight
b. Sound
c. Balance
d. Taste
D. Taste
Special senses derived from the ectoderm are part of what modality?
a. Special Somatic Sensory (SSS)
b. Special Visceral Sensory (SVS)
c. Special Visceral Motor (SVM)
d. General Visceral Sensory (GVS)
A. SSS
Special senses derived from the endoderm are part of what modality?
a. General Visceral Motor (GVM)
b. General Somatic Sensory (GSS)
c. SVS
d. General Somatic Motor
C. SVS
Nerves to muscles derived from the pharyngeal arches are part of what modality?
a. GVS
b. GSM
c. GVM
d. SVM
D. SVM
General sensation from the viscera are part of what modality?
a. SSS
b. SVM
c. GVS
d. GSS
C. GVS
Nerves that supply smooth muscles of the gut track and are autonomic motor control are part of what modality?
a. SVM
b. GVM
c. GSS
d. GSM
B. GVM
Nerves for general senses from the ectoderm (skin) are part of what modality?
a. GVS
b. GVM
c. GSS
d. GSM
C. GSS
Nerves that innervate skeletal muscles are part of what modality?
a. SVS
b. SVM
c. GVM
d. GSM
D. GSM
The anterior horns of the spinal cord are comparable to ____ in the brain.
a. Motor nuclei
b. Dorsal root ganglia
c. Cerebellum
d. Cerebrum
A. Motor nuclei
Which of the following CN do not have dorsal ganglia or dorsal roots?
a. CN III
b. CN VI
c. CN XII
d. CN I
D. CN 1
What modality is CN I part of?
a. SSS
b. SVS
c. GVM
d. GSM
B. SVS
What CN neurons can be replaced throughout the life by stem cells?
a. CN III
b. CN I
c. CN II
d. CN X
B. CN I
The optic nerve (CN II) decussates in the optic chiasma near the internal carotid and the _____.
a. Hypothalamus
b. Thalamus
c. Pineal galnd
d. Pituitary gland
D. Pituitary gland
What modality is CN II part of?
a. SSS
b. SVS
c. GVM
d. GSM
A. SSS
What nerve supplies most of the extrinsic muscles of the eye?
a. CN I
b. CN II
c. CN III
d. CN VI
C. CN III
Which CN enters the orbit through the superior orbital fissure?
a. CN X
b. CN V
c. CN II
d. CN IV
D. CN IV
What nerve innervates the superior oblique muscle of the eye?
a. CN III
b. CN IV
c. CN V
d. CN VI
B. CN IV
What modality is CN IV part of?
a. SSS
b. GVM
c. GSM
d. SVM
C. GSM
What is the ONLY crossed CN and the only one that emerges dorsally?
a. CN I
b. CN II
c. CN VI
d. CN IV
D. CN IV
What nerve is CN I?
a. Olfactory
b. Optic
c. Trochlear
d. Abducens
A. Olfactory
What nerve is CN II?
a. Occulomotor
b. Olfactory
c. Vestibulocochlear
d. Optic
D. Optic
What nerve is CN III?
a. Optic
b. Occulomotor
c. Hypoglossal
d. Abducens
B. Occulomotor
What nerve is CN IV?
a. Occulomotor
b. Abducens
c. Trochlear
d. Optic
C. Trochlear
What nerve is CN VI?
a. Olfactory
b. Optic
c. Abducens
d. Trigeminal
C. Abducens
What CN originates from the abducens nucleus and enters the orbit through the superior orbital fissure?
a. CN V
b. CN IV
c. CN VI
d. CN II
C. CN VI
What CN innervates the lateral rectus muscle of the eye?
a. CN III
b. CN V
c. CN IV
d. CN VI
D. CN VI
What modality is CN VI?
a. SSS
b. GVM
c. GSM
d. SVM
C. GSM
What nerve is CN VIII?
a. Occulomotor
b. Olfactory
c. Vestibulocochlear
d. Optic
C. Vestibulocochlear
What modality is CN VIII?
a. SSS
b. GVM
c. GSM
d. SVM
A. SSS
What CN arises from C1-3 and enters the cranial cavity through the foramen magnum?
a. CN X
b. CN XI
c. CN XII
d. CN IX
B. CN XI
What nerve leaves the cranial cavity via the jugular foramen?
a. CN X
b. CN XI
c. CN XII
d. CN IX
B. CN XI
CN XI innervates what muscles?
a. Orbicularis oris
b. Occularis oris
c. Sternocleidomastoid/Trapezius
d. Anterior/Posterior scalenes
C. Sternocleidomastoid/Trapezius
What modality is CN XI?
a. SSS
b. GVM
c. GSM
d. SVM
D. SVM
What CN has cranial roots that originate from the nucleus ambiguus in the medulla, joins the vagus nerve, and supplies muscles of the larynx (via recurrent laryngeal nerve)?
a. CN XII
b. CN X
c. CN XI
d. CN IX
C. CN XI
What nerve is CN XII?
a. Optic
b. Occulomotor
c. Hypoglossal
d. Abducens
C. Hypoglossal
What modality is CN XII part of?
a. SSS
b. GVM
c. GSM
d. SVM
C. GSM
What CN comes from the floor of the 4th ventricle, exits the cranial cavity via the hypoglossal foramen, and supplies the extrinsic and intrinsic muscles of the tongue?
a. CN XII
b. CN X
c. CN XI
d. CN IX
A. CN XII