Upper Motor Neurons
Upper motor neurons and lower motor neurons connect the ___________ cortex with muscles.
cerebral
(Textbook p. 344)
which nervous system are the LMN's part of?
peripheral nervous system (PNS)
Week 1 slides (#25)
what is the eye's sensory nerve
the optic nerve (II)
What is cranial nerve VII?
Facial Nerve (Textbook p. 82)
What is Cranial Nerve IX?
Glossopharyngeal Nerve
(pg 544)
Upper motor neurons synapse in the _______ ______ with lower motor neurons.
spinal cord
(Textbook p. 341)
What do the lower motor neurons do?
provides the output pathway via its axon.
(pg 298)
what is the nerve that allows you to "smell the roses"
olfactory nerve (I)
CN V is a motor nerve for what movement?
jaw movement (p. 81)
what nerve is involved with turning the head?
XI (spinal accessory nerve)
(page #84)
An upper motor neuron lesion can result in increased/decased reflexes and muscle tone.
increased
(Textbook p. 346)
weakness and loss of muscle control
decreased (Textbook p. 300)
What is the nerve that sends messages to the occipital lobe of the brain
optic nerve (II)
CN V damage is associated with what?
facial sensory loss and jaw paralysis
(p.81)
where is CN X located?
medulla
week 1 slides (#92)
Upper motor neurons are also known as _______ neurons because their descending axons pass through the pyramids in the medulla.
pyramidal
(Textbook p.341)
What are the two important components of spinal motor control circuitry?
LMN and motor unit
(pg 298)
An athlete gets an assessment after they complain of blurred vision and an inability to read the scoreboard. Which Cranial Nerve is likely dysfunctioning?
optic nerve (II)
CN VII is in charge of the sense of taste for what part of the tongue?
anterior part (back)
(p. 82)
which CN is responsible for your gag reflex?
CN IX (glossopharyngeal)
(page #395)
An individual with a lesion in the upper motor neuron system can present with what kind of paralysis?
hemiplegia (one half of the body)
(Textbook p. 341)
What can lesions in lower motor neurons result in?
weakness and loss of muscle control
(Textbook p. 300)
which nerve senses scents?
olfactory (I)
What are the three sensory branches of CN V?
ophthalmic, maxillary, and mandibular
(p. 373)
What primary cranial nerve is associated with abnormal phonation, resonance, and dysphagia?
Cranial Nerve X, Vagus Nerve
(pg 517)