Specializing in Canine and Feline Neurology and Neurosurgery for over 35 years

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Triangular-shaped bone composed of three fused vertebrae located caudal to the lowest lumbar vertebrae; strengthens and secures the pelvis.

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Vertical plane passing from front to back dividing the body into right and left halves.

►click here to learn more-This link is provided by: University of Minnesota, College of Veterinary Medicine 

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dorsal  ;  transverse

sagittal sulcus

See longtitudinal fissure.

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longitudinal fissure


Malignant neoplasia growing from connective tissue (cartilage, fat, blood vessels, muscle or bone).

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malignant  ;  neoplasm

Schwann cell

Form of neuroglial cell of the peripheral nervous system responsible for the synthesis and maintenance of the myelin sheath that insulates axons.


A discrete event due to sudden, transient neuronal discharge that disturbs the brain’s normal electrical activity and causes a temporary change in behavior, consciousness, bodily movements or sensation.  A seizure can have any one to three phases: preictal, ictus, and/or postictal.  Seizures are the main symptoms of epilepsy, but can be caused by a wide variety of conditions.


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brain ; epilepsy ; ictus ; neuron ; postictal ; preictal

semicircular canals

Three half-circular, interconnected tubes in the inner ear that measure the body's orientation.  This information is used by the vestibular system to maintain balance.

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ear  ;  inner ear  ;  vestibular system

sensory nerve

A nerve composed of sensory nerve fibers.

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fiber  ;  neuron  ;  sensory neuron


sensory neuron

A nerve cell that conducts action potentials from sensory organs about changes in the external or internal environments toward the central nervous system; also called an afferent neuron

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action potential ; afferent ; central nervous system (CNS) ; nerve ; neuron

septal nuclei

Neural nuclei that are located in the middle rostroventral part of the cerebrum, i.e. septal region. They communicate with a variety of forebrain and brainstem areas and play an important role in reward and reinforcement. 

►click here to learn more-link provided by: University of Pennsylvania, School of Veterinary Medicine 

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brainstem ; cerebrum ; forebrain ; rostral ; ventral 

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