nervous system

nervous system

the function of the nervous system is to send messages to the body

central nervous system

sends messages to from the brain down the spine and to the peripheral nervous system. it is made of the brain and the spinal cord.

peripheral nervous system

the peripheral nervous system connects CNS to the body. it is made of motor neurons and sensory neurons.

cerebral hemispheres

the cerebral hemispheres control everything that the brain stem and diencephalon does not. it is made of the frontal lobe, parietal lobe, right cerebral hemisphere, left cerebral hemisphere, and the longitudinal fissure.
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the diencephalon consists of the right thalamus, the left thalamus, the hypothalamus, and the cerebellum. the diencephalon is involved with directing sense impulses throughout the body, autonomic function control, endocrine function control, motor function control, homeostasis, hearing, vision, smell, taste, and touch perception.
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brain stem

the function of the brain stem is to regulate basic function such as eating, sleeping, and breathing. the brain stem consists of the midbrain, pons and medulla.
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The cerebellum coordinates voluntary movements such as posture, balance, coordination and speech. it consists of the anterior lobe, posterior lobe, flocculus, posterior fissure, horizontal fissure, and primary fissure.
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parkinsons disease

Parkinson's disease is a disease that effects movement, often causing tremors. symptoms include but are not limited to difficulty walking, stiff muscles, slow shuffling gait, muscle rigidity, involuntary movements, problems with coordination, difficulty standing, muscle twitch, difficulty with bodily movement, or slow bodily movement. between 200k and 3 million people get it per year in the U.S. it is not curable but can be managed through prescription medication and exercise.


meningitis is inflammation of brain and spinal cord membranes, typically caused by an infection. symptoms include, but are not limited to pain in the muscles, back, or neck, red rashes or blotchy rashes, fever, malaise, shivering, loss of appetite, nausea, lethargy, fatigue, or chills, and others. between 20k and 200k people get it a year in the U.S. it is curable through antibiotics or steroids.

motor neuron

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simple reflex arc

the message goes from the receptor cell, through the spinal cord, to the muscle, which has a reflex.
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