Chapter 5 - Quiz 4 Flashcards
What is somatic?
Skin
Skeletal muscles
Joints
What is visceral?
Smooth muscles
Organs
Glands
Which cranial nerves are GSE?
III-Midbrain
IV-Midbrain
VI-Pons
XII-Upper Medulla
3,4,6,12
Which CN are SVE?
V - Pons
VII - Pons
IX - Upper Medulla
X - Upper Medulla
XI - Lower Medulla
5,7,9,10,11
Which CN are GVE?
III - Midbrain
VII - Pons
IX - Upper Medulla
X - Upper Medulla
3,7,9,10
Which cranial nerves are SVA and GVA
SVA- I, VII, IX, X (1, 7, 9, 10) cerebrum, pons/upper medulla, upper medulla, upper medulla
GVA - IX, X (9,10)
Which cranial nerves are GSA?
V - complete brainstem
Small elements of:
VII, IX, X
5,7,9,10
Which cranial nerves are SSA?
II-not on the brainstem
VIII - Pons & pons/upper medulla
2,8
Function of GSE fibers
Innervate skeletal muscles of head and neck
Function of SVE fibers
Innervate muscles of the face, pharynx, larynx, and select muscles of the neck
What is the function of GVE fibers?
Comprised of autonomic component - Innervate smooth muscle tissues and glands
Responsible for light adaptation reflex of the pupils, salivation, and vomited
What is the function of GSA fibers
Sensory info related to touch, proprioception, pain, and temperature
What is the function of GVA fibers
General sense of pain and temperature, hunger and thirst
What is function of SSA fibers?
Sensory inputs related to vision, hearing and vestibular activity
What are the lower motor neurons for speech
5, 7, 9, 10, 11, 12
What is unique about CN I and II
-only CN that originate from neural plate and tube rather than neural crest and project directly into the brain without passing through the brainstem
How are CN and spinal nerves alike?
-LIKE: transmit sensory info towards CNS and motor info toward periphery
BS sensory ganglia cells are pseudounipolar which is similar to dorsal root ganglia of sensory nerves of spinal cord
How do CN differ from spinal nerves?
Spinal nerves have simple mixed nature whereas CN are more complex. They can be mixed, only motor, or only sensory.
CN can also have a mix of autonomic and somatic function
CN mediate highly specialized functions such as hearing, vision, etc. That is NOT present in spinal nerves
What is strabismus
Inability to move eyes in a coordinated way
What is diplopia?
Double vision
What is ptosis?
Drooping upper eyelid
What is mydriasis
Pupil dilation
What is the result of pupillary reflex testing if lesion on right or left optic nerve/oculomotor
Less pupil constriction in opposite eye if optic nerve
No pupil reflex if oculomotor in same eye as damage
