I'm the thinnest and most flexible part of the tongue and play an important role in articulation:
root
tip
blade
dorsum
I'm the small region adjacent to the tip; in resting position, I lie just inferior to the alveolar ridge:
dorsum
root
lingual frenulum
blade
I'm the largest area of the tongue that lies in contact with both the hard and soft palates:
dorsum
tip
root
blade
I mainly support and protect the nerve cells; I do not transmit nerve impulses:
interneurons
glia cells
motor neurons
cranial nerves
I'm the most common type of neuron in the nervous system; I link neurons with other neurons and play an important role in controlling movement:
interneurons
sensory neurons
motor neurons
The PNS contains 3 types of nerves. Which is not one of those 3?
autonomic
spinal
cranial
central
I have sensory branches to the nose, eyes, and forehead:
maxillary branch
mandibular branch
ophthalmic branch
I have sensory branches to the upper lip, maxilla, upper cheek area, upper teeth, maxillary sinus, and palate:
mandibular branch
maxillary branch
ophthalmic branch
I have sensory branches to the mandible, lower teeth, lower lip, tongue, part of the cheek, and external ear:
mandibular branch
ophthalmic branch
maxillary branch
I help connect the brainstem and the cerebellum; I control many motor/sensory functions (postural/visual reflexes, eye movements, & head movements)
pons
medulla
spinal cord
midbrain
I transmit information relative to movement from the cerebral hemispheres to the cerebellum; I'm involved with hearing and balance:
pons
midbrain
medulla
spinal cord
I'm very important for speech because I contain descending fibers that transmit motor information to several CN nuclei:
midbrain
medulla
pons
spinal cord
I'm important for maintaining states of consciousness, such as sleep, drowsiness, alertness, and excitement
Diencephalon
Basal Ganglia
Cerebellum
Reticular Activating System
I receive information about motor impulses from the cerebellum and the basal ganglia and relay this information to the motor areas of the cerebral cortex; I'm critical for maintenance of consciousness
cerebellum
globus pallidus
reticular activating system
thalamus
Lesions to me can result in unusual body postures, dysarthria, changes in body tone, and involuntary and uncontrolled movements:
thalamus
basal ganglia
cerebrum
hypothalamus
I'm the direct motor activation pathway that is primarily responsible for facilitating voluntary movement (including speech):
extrapyramidal system
pyramidal system
