Section 3: Motor Systems

Index of Terms

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After each term is a descriptor detailing whether the link sends you to a definition, explanation or mere use of a term.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

DEFINED Links to definition of term

EXPLAINED Links to term being explained in text or graphic

USED Links to term being merely used, not defined or explained

Abducens interneurons used
Abducens nucleus defined
Abduction defined
Accommodation explained
Accommodation neural circuit explained
Accommodation response defined
Adduction defined
Akinesia used, defined
Alpha motor neurons used, explained, used
Alpha-gamma coactivation defined, defined
Annulospiral endings used
Ansa lenticularis explained
Anterior corticospinal tract defined, explained
Anterior lobe explained
Anterior paracentral lobule used
Apraxia defined, defined
Argyll Robertson response defined
Association cortex defined explained
Ataxia defined
Athetosis defined
Autogenic inhibition reflex explained
Babinski sign defined
Ballismus defined
Basal ganglia explained, used, used
Betz cells used
Binocular field used
Brachium conjunctivum defined
Brachium of the superior colliculus used
Brachium pontis defined
Bradykinesia used, defined
Brainstem reticular formation explained
Caudate nucleus used
Central sulcus used
Cerebellar cortex defined
Cerebellar deep nuclei defined, used
Cerebellum used, defined, used, used
Cerebral peduncle used
Cerebrocerebellum defined
Chorea defined
Choreiform movements explained
Ciliary ganglion explained
Clasp-knife reflex defined
Climbing fibers explained, used
Clonus explained
Cognitive deficits explained
Cogwheel rigidity defined
Constructional apraxia defined, defined
Cornea used
Corneal eye blink reflex explained
Corticobulbar system explained
Corticospinal system explained
Corticospinal tracts explained
Cranial motor nuclei used
Cranial nerves used
Crossed extension reflex explained
Crus cerebri used
Decomposition of movement defined
Deep brain stimulation defined
Deep tendon reflex used
Dentate nucleus defined, used
Dilator muscle explained
Diplopia defined
Direct pathway explained, explained, used, used
Dopamine used
Dopaminergic neurons used, used
Dorsolateral pontine nucleus explained
Dynamic nuclear bag fibers defined
Dynamics defined
Dysdiadochokinesia defined, defined
Dyskinesias defined
Dysmetria defined
Dystonia defined
Edinger-Westphal nucleus explained
Extrafusal fibers defined, explained
Extrafusal muscle fibers explained
Extraocular muscles defined
Extrapyramidal disorders defined
Extrapyramidal motor system defined
Extrapyramidal syndrome explained
Eye blink reflex used
Facial motor neurons explained
Facial nerve explained
Fasciculation defined
Fastigial nucleus defined, used
Fast-twitch fatigable muscle fibers used
Fast-twitch fatique-resistant fibers used
Feedback control system explained
Feedforward control system explained
Fibrillation explained
Flexor reflex explained, used, used, used
Flexor-extensor rule explained
Flocculonodular lobe explained, used
Flower spray endings used
Frontal eye field explained, explained
Functional segregation explained
Gamma bias defined
Gamma motor neurons explained, used, explained
Ganglion used
Gaze systems explained
Globus pallidus used, defined
Golgi tendon organ used, defined, explained, used
Granule cell defined
Group Ia afferents explained
Group Ib fibers explained, used
Group II afferents explained
Group III afferents explained, used
Hemiballismus explained
Hemiplegia defined
Hierarchical organization explained
Homunculus explained
Horizontal gaze center explained
Horner’s syndrome explained
Huntington’s disease defined, used, defined
Hyperreflexia explained
Hypertonia explained
Hyporeflexia explained
Hypotonia explained, defined
Ia afferents explained
Ib inhibitory interneuron defined
Indirect pathway explained, explained, used, used
Inferior cerebellar peduncle defined
Inferior oblique explained
Inferior olive used
Inferior rectus explained
Innervation ratio defined
Intention tremor defined, defined
Intermediate zone explained, used
Interposed nuclei defined, used
Intrafusal fibers defined, explained, explained
Isometric contraction defined
Isotonic contraction defined
Kinematics defined
Knee-jerk reflex used, used
Lateral corticospinal tract defined, explained
Lateral geniculate body used
Lateral hemispheres explained, used
Lateral rectus defined
Lateral vestibular nucleus explained, used
Lateral vestibulospinal tract explained
L-Dopa defined
Lead-pipe rigidity defined
Lens accommodation defined
Lens refraction used
Lenticular fasciculus explained
Lenticular nucleus defined
Lentiform nucleus defined
Lower motor neuron syndrome defined
Lower motor neurons used
Medial longitudinal fasciculus (MLF) explained, used, used
Medial rectus defined
Medial vestibular nucleus explained
Medial vestibulospinal tract explained
Medullary pyramids explained
Medullary reticular formation explained
Medullary reticulospinal tract explained
Middle cerebellar peduncle defined
Mirror neurons defined
MLF explained, used, used
Monoplegia defined
Mossy fibers explained, used
Motor control explained, used
Motor cortex explained
Motor neuron pool defined, explained
Motor unit defined
Motor-set neuron defined
MPTP defined
Muscle spindle defined, used, explained, used, used
Myotatic reflex explained, used, used
Nigrostriatal pathway explained, used
Nigrostriatal projection used
Nuclear chain fibers defined
Nucleus accumbens used
Nystagmus defined
Ocular motor systems explained
Ocular reflexes defined
Oculomotor complex defined
Oculomotor nerve explained
Ohm’s law defined
Optic chiasm used
Optic nerve used
Optokinetic movements defined
Optokinetic nystagmus explained
Orbicularis oculi explained
Pallidotomy defined
Parallel fibers used, defined
Paralysis used
Paramedian pontine reticular formation (PPRF) explained
Paraplegia defined
Paresis defined
Parkinson’s disease used, defined, used, explained
Plegia defined
Pontine nuclei used, used
Pontine reticular formation explained
Pontine reticulospinal tract explained
Posterior lobe explained
Posterior parietal cortex explained
Posterolateral fissure explained
PPRF explained
Precentral gyrus used
Prefrontal cortex explained
Preganglionic neurons explained
Premotor cortex used, explained
Presbyopia explained
Pretectal area of the midbrain explained
Primary afferents used
Primary fissure explained
Primary motor cortex (M1) used, explained, explained, used
Proprioception explained, defined
Proprioceptors explained
Proximal-distal rule explained
Pupil accommodation defined
Pupillary dark response explained
Pupillary light reflex defined
Purkinje cell explained, defined, used, used, explained
Putamen used
Pyramidal tract explained
Quadriplegia defined
Rate code explained
Reciprocal excitation in the autogenic inhibition reflex explained
Reciprocal inhibition in the flexor reflex explained
Reciprocal inhibition in the stretch reflex explained
Red nucleus used, explained, used, used
Renshaw cells explained
Restiform body defined
Resting tremors used, defined
Reticulospinal tract explained
Retina(s) used used used
Rigidity defined
Root used
Rubrospinal tract explained, used, used
Saccade used
Scanning speech defined
Sclera used
Secondary afferents used
Size principle explained
Slow-twitch fibers used
SMA used, explained
Smooth pursuit explained, defined
Smooth pursuit system used
Spasticity explained
Sphincter used
Sphincter muscle fibers explained
Spinal trigeminal tract used
Spinocerebellum defined
Static nuclear bag fibers defined
Strabismus defined
Stretch reflex used, used, used, used
Striatum defined, explained
Substantia nigra defined, explained, used, used
Subthalamic nucleus defined, explained
Superior cerebellar peduncle defined
Superior colliculus used, used, used
Superior colliculus neurons explained
Superior oblique explained
Supplementary motor area (SMA) used, explained
Supraoculomotor nuclei explained
Tardive dyskinesia defined
Tectospinal tract explained, used
Temporal eye field explained
Tetanus used
Trigeminal nerve used, explained
Trochlear nucleus defined
Upper motor neuron syndrome defined
Ventrolateral (VL) thalamic nucleus used
Vergence explained
Vermis explained, used
Vertical gaze center explained
Vestibular nuclei defined, used
Vestibule-ocular movements defined
Vestibulocerebellum defined, used, used
Vestibuloocular reflex (VOR) defined
Vestibulospinal tract explained
Visual cortex used
VL used
Volition explained
Voluntary saccades defined used
VOR defined
Woody Guthrie Disease defined