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It is the part of the body that coordinates the voluntary and involuntary actions of the body, and transmits signals between different parts of the body. 2 main parts: - Central Nervous System - Peripheral Nervous System
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The Nervous SystemLauren PintoAngie Miguel
Joe GuandaliniKaitlyn Pugliese
What is the Nervous System?
It is the part of the body that coordinates the voluntary and involuntary actions of the body, and transmits signals between different parts of the body.
2 main parts:- Central Nervous System- Peripheral Nervous System
Central Nervous System The part of the nervous system that
integrates the information that it receives from, and coordinates the activity of all the parts of the body.
It contains majority of the nervous system such as:
-Brain - Spinal Cord
Peripheral Nervous System The part of the nervous system
consisting of nerves and ganglia outside of the brain and spinal cord.
Its main function is to connect the central nervous system to the limbs and organs.
Divided into 2 parts:- Somatic Nervous System- Autonomic Nervous System
Somatic Nervous System Is the part of the PNS associated with
the voluntary control of body movements.
Consists of efferent nerves which are responsible for simulating muscle contraction.
Autonomic Nervous System Is part of the PNS that acts as the
control system. It controls visceral functions such as:
- Heart rate- Digestion- Respiratory rate
Parts of the Nervous System
Neuron- Nervous cell that processes and transmits information.
Axons- Nerve fiber that conducts electrical impulses.
Neurotransmitters- Endogenous chemicals that transmit signals from a neuron to target cell across a synapse.
Synapses- Structure that permits a neuron to pass an electrical or chemical signal to another cell.
Glial Cells- Non- Neuronal cells that provide support and nutrition to maintain homeostasis.
Hydrocephalus A buildup of fluid inside the skull that leads to brain
swelling. It is caused by an imbalance of how much fluid is
produced and how much is absorbed into the blood stream.
Signs and symptoms:- Large head- Loss of coordination or balance- Loss of memory Treatments- Shunt- Ventriculostomy
Multiple Sclerosis Disease in which your body’s immune system eats
away at the protective sheath (myelin) that covers your nerves.
It is an autoimmune disease. Signs and symptoms:- Numbness or weakness - Double vision or blurring of vision- Slurred Speech Treatments:- Cannot be cured- Corticosteroid- Plasmapheresis
Epilepsy A central nervous system disorder in which the
nerve cell activity in your brain is disturbed, causing a seizure during which you experience abnormal behavior.
Signs and symptoms:- Temporary confusion- Uncontrollable jerking
Treatment: - Vagus nerve stimulation
- Ketogenic diet
Parkinson’s Disease A Progressive disorder of the nervous system
that affects your movement. Signs and symptoms:
- Shaky- Slowed movement- Speech changes
Treatments:- Cannot be cured- Medications- Carbidopa
Homework
Labeling Study the vocabulary for Bingo!
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