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March 12, 2020
The Nervous System
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Central Nervous System (CNS) Consists of the ______________ and the ___________________ Acts as the coordinating center for incoming and outgoing information
The Spinal Cord Carries __________________ nerve messages from receptors to the brain and relays _______________ nerve messages from the brain to muscles, organs, and glands.
Peripheral Nervous System (PNS) consists of _________________ that carry information between the organs of the body and the CNS.
Two parts: Somatic: controls the _______________ __________________, _________________, and __________________.
Autonomic: controls the _______________ _______________ of the body.
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The Brain The brain is surrounded by a tough ___________ layer protective membrane known as the ____________________. Outer Layer: _____________________ Middle Layer: ____________________ Inner Layer: ______________________ __________________________ cushioning fluid that circulates between the innermost and middle membranes of the brain and spinal cord.
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March 12, 2020
Cerebrum: largest and most highly developed part of the human brain ( 2 major ________________ store sensory information and initiate voluntary motor activities)
Cerebral Cortex: _____________ lining of the cerebral hemisphere.
Corpus Callosum: _______________ tract that joins the 2 cerebral hemispheres together.
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Cerebellum: controls limb movements, balance, and muscle tone
Pons: Act as a relay station by sending messages between the cerebellum and the medulla.
Medulla Oblongata: joins the spinal cord to the cerebellum one of the most important sites of autonomic nerve control.
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March 12, 2020
Anatomy of a Nerve Cell2 different types of nerve cells:
1. ___________________, are nonconducting cells and are important for the structural support of other nerve cells.
2.___________________, are the functional units of the nervous system.
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Three groups of Neurons:
1._____________________, carry impulses from sensory receptors to the central nervous system also known as ________________ neurons. These are grouped together in clusters called ____________________, located outside of the spinal cord.
2._____________________, link neurons within the body.
3._____________________, also known as ________________ neurons, relay information to the effectors (Muscles, organs, glands).