Chapter 35 Nervous System Vocabulary

Question Answer
brain major organ in the nervous system that controls the body's actions
brain stem part of the brain that controls functions that maintain life
central nervous system (CNS) controls the brain and spinal cord by receiving signals from the PNS
cerebellum part of the brain that controls coordination and movement
cerebrum part of the brain that controls voluntary movements of the body and thought processes and is the biggest region of the brain
chemoreceptor chemical receptor that allows an animal to taste, smell, and detect sounds
coma damage to the midbrain that causes a loss of consciousness and awareness
cranial nerve test reflex test of the eye where a hand is moved quickly toward the eye without touching the eye or any hair around the eye
dorsal root nerve branch of the vertebrae that contain sensory nerves
epilepsy veterinary term for seizures
fight or flight natural instinct of animals in which they take care of themselves by either running away or protecting themselves by fighting
hypothalamus organ within the brain located in front of the thalamus that controls hormone production
interneurons cells that deliver signals from one neuron to another from the brain to the spinal cord
intravertebral disc disease (IVDD) injury to the spine that causes pressure on the discs and/or spinal cord and may cause partial or complete paralysis
involuntary reflex occurs without the need for thinking and serves as a necessary body function, such as the heart beating
knee jerk reaction reflex used to assess the spinal nerves
medulla oblongata part of the brain that controls the bodys involuntary functions
midbrain part of the brain that controls the senses
motor neuron cells that deliver signals from the central nervous system to the muscles to give a response
nervous system the body's control network primarily controlled by the brain
neurons specialized cells within the nervous system that control impulses
paralysis partial or complete loss of motor skills
parasympathetic system spinal cord system responsible for opposite reactions, such as decreased vital signs, regulated body systems back to normal and controlling peristalsis
peripheral nervous system (PNS) controls the nerves, detects a stimulus, sends signals, and informs the CNS and causes a response for an action to occur
peristalsis wave like motions of the stomach that allow digestion of food
pituitary gland organ located between the thalamus and hypothalamus that controls hormone releases in the body
proprioception relates to the body's ability to recognize body position for posture or movement
rabies a deadly virus that can affect an mammal including humans, usually transmitted by the saliva of an infected animal transferred into the bloodstream
receptor found within the nerves located throughout the body and allows for detecting changes within the body and the environment
reflex units of function that produce a movement created by volts
reflex hammer tool used to tap the area of the knees and joints to elict a response
seizure loss of voluntary control of the body with an amount of unconsciousness causing uncontrolled violent body activity
sensory neuron cells that deliver signals from the CNS
spinal cord strands of fibers that attach the brain stem to the PNS to send and receive signals through the body, begins at the base of the brain and continues to the lumbar vertebrae
spinal nerve reflexes evaluated for proprioceptive reflexes of the muscles and tendons
sympathetic system spinal cord system that is responsible for the fight or flight reaction increased vital signs and certain drug reactions
thalamus organ within the brain located at the top of the brain stem
tract nerves that attach to the spinal cord and run through the body providing sensations and feelings
vagus nerve main nerve within the spinal cord system
ventral root nerve branch of the vertebrae that contains motor nerves
vital sign body signs such as heart rate, respiratory rate, and temperature
volt electrical units of measurement within the body that create a force within cels
voluntary reflex occurs when an animal asks its body to perform a desired function such as walking or running
West Nile Virus a mosquito borne disease that causes inflammation or sweling of the brain and spinal cord

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