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Cranial Nerve I
- Olfactory
- Origin: olfactory blulb
- Type
: Sensory- Fxn: Smell
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Cranial Nerve II
- Type: Sensory
- Fxn: Central and peripheral vision
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Cranial Nerve III
- Oculomotor
- Type
: Motor to eye muscles- Fxn: eye movement via medial and lateral rectus and inferior oblique and superior rectus musc. Lid elevation via the levator musc.
- Type: Parasympathetic Motor
- Fxn: pupil constriction, ciliary muscles
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Cranial Nerve IV
- Trochlear
- Type
: Motor- Fxn:eye movement superior to oblique musc
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Cranial Nerve V
- Trigeminal
- Type
: Sensory- Fxn: sensation from skin of face and scalp and mucous membranes of mouth and nose
- Type: Motor
- Fxn: Muscles of mastication
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Cranial Nerve VI
- Abducens
- Origin:
Inferior pons - Type:
Motor- Fxn: eye movement via lateral rectus musc
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Cranial Nerve VII
- FacialOrigin: Inferior pons
- Type:
Sensory- Fxn: pain and temp from ear area. deep sensations from the face. taste from anterior 2/3 of tongue
- Type: Motor
- Fxn: musles of the face and scalp
- Type: Parasympathetic Motor
- Fxn: Lacrimal, submandibular, and sublingual salivary glands
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Cranial Nerve VIII
- VestibulocochlearOrigin: Pons-Medulla Junction
- Type:
Sensory- Fxn: Hearing, Equilibrium
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Cranial Nerve IX
- GlossopharygealOrigin: Medulla
- Type:
Sensory- Fxn: pain and tep from ear. sensations from posterior 1/3 of tongue and pharynx
- Type: Motor
- Fxn: Skeletal musc of throat
- Type: Parasympathetic Motor
- Fxn: Paratid Glands
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Cranial Nerve X
- Type: Sensory
- Fxn: pain and temp from ear. sensations from pharynx, larynx, thoracic and abd viscera
- Type: Motor
- Fxn: musc of the soft palate, larynx, and pharynx
- Type: Parasympathetic motor
- Fxn: thoracic and abd viscera. cells of secretory glands. cardiac and smooth musc innervation to the level of the splenic flexure
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Cranial Nerve XI
- AccessoryOrigin: Medulla (anterior gray horn of the cervical spine)
- Type: Motor
- Fxn: Skeletal musc of the pharynx and larynx and sternocleidomastoid and trapezius muscles
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Cranial Nerve XII
- HypoglossalOrigin: Medulla
- Type: Motor
- Fxn: Skeletal musc of the tongue
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Cerebrum
- Higher mental functions
- General movement
- Perception
- Integrations of all fxns of the lobes
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Frontal Lobe
- Voluntary skeletal musc movement
- Fine repetitive motion
- Eye movements
- Motor aspects of speech
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Parietal Lobe
- Interpretation of sensations (taste, visual, smell, hearing, temp, pressure, pain, texture, 2pt discr)
- Recognition of body parts
- Proprioception
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Occipital Lobe
- Vision center
- Interpretation of vision
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Temporal Lobe
- Hearing or the perception, reception, and interpretations of sounds
- Long-term memory
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Insula (Corpus Callosum)
Coordination of activities between the two hemispheres of the cerebrum
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Limbic System
- Mediates:
- certain primitive behavior responses
- visceral emotional responses
- feeding behaviors
- biological rhythms
- sense of smell
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Thalamus
- Processing center for interpretation of most sensations except smell
- Relay center for sensory motor information
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Hypothalamus
- Maintains the internal environment (temp, ANS fxn, endocrine fxn, wakefulness)
- Regulates emotional expression
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Cerebellum
- Provides conscious and reflexive control of muscle tone
- Maintains balance and posture
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Brainstem
- Locations of the descending and ascending motor and sensory pathways
- Connects the cerebrum, cerebellum, and spinal cord
- Locations of the origin of the 12 cranial nerves
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