Lesson 5: Cranial Nerves and Spinal Nerves Flashcards
ILO 1: Describe the structure and organization of the neural systems ILO 2: Relate the parts of the neural systems to their sensory, motor, and autonomic functions ILO 3: Analyze how the neural systems relate to body structures and functions, activities, and occupational participation, with guidance ILO 4: Explain how changes in the neural systems affect body structures and functions, activities, and occupational participation ILO 5: Demonstrate beginning professional behaviors (self-directed le
What is the CN:
- Located at the olfactory mucosa
- Purely sensory
- Transmits smell information
CN 1: Olfactory Nerve
What is also known as the “loss of smell”?
Anosmia
What is the CN that:
- Located at the ganglion cells of the retina
- Purely sensory
- Sends visual information from the eye to the other parts
CN 2: Optic Nerve
What do you call the “loss of vision”?
Anopsia
What is the CN:
- Located at the midbrain
- Purely motor
- Innervates the muscles of the eye (SR, MR, IR, IO, Levator palpebrae superioris)
CN 3: Oculomotor Nerve
What are the eye muscles does CN 3 innervate?
Superior rectus
Medial rectus
Inferior rectus
Inferior oblique
Levator palpebrae superioris (opens eyelids)
What do you call the “drooping of eyelids”?
Ptosis
What do you call the eye misalignment in CN 3?
External strabismus
The innervation of CN3 on sphincter muscle of the eye is responsible for ___.
pupil constriction
The innervation of CN 3 on ciliary muscles is responsible for
accommodation reflex
Eye lens adjust to form clearer image of objects at varying distances
Accommodation reflex
constriction of both eyes in response to bright light
Pupillary Light Reflex
Which of the following is afferent:
CN 2 or 3?
CN 2 (Optic Nerve)
Which of the following is efferent:
CN 2 or 3?
CN 3 (Oculomotor Nerve)
What reflex is responsible for constriction of both pupils when light hits only one eye?
Consensual Light Reflex
What is the CN:
- Located at the midbrain
- Purely motor
- innervates Superior Oblique
CN 4: Trochlear Nerve
What lesion in the CN 4 is (double vision)?
vertical diplopia
What is the CN:
- Located
CN 6: Abducens Nerve
