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Glossary of Medical Terminology Chapts. 10 and 22

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Lower portion of the brain that connects the cerebrum with the spinal cord. The pons and the medulla oblongata are part of the brainstem.
Brainstem
Middle layer of the three membranes (meninges) that surround the brain and spinal cord.
Arachnoid Membrane
Part of a nerve cell that contains the nucleus.
Cell Body
Nerves that control involuntary body functions of muscles, glands, and internal organs.
Autonomic Nervous System
Microscopic fiber that carries the nervous impulse along a nerve cell.
Axon
The brain and the spinal cord make up the...?
Central Nervous System (CNS)
Part of the brain that coordinates muscle movements and maintains balance.
Cerebellum
gray matter of the brain.
Cerebral Cortex
Fluid that circulates thoughout the brain and spinal cord.
Cerebrospinal Fluid (CSF)
Largest part of the brain.
Cerebrum
Thick, outermost layer of the meninges surrounding and protecting the brain and spinal cord.
Dura Mater
A collection of nerve cell bodies in the peripheral nervous sustem.
Ganglion
Sheets of nerve cells that produce elevation in the surface of the cerebral cortex; convolution
Gyrus
The part of the brain just above the spinal cord; controls beathing, hear beat, and the size of blood vessels; nerve fibers cross over here.
Medulla Oblongata
Three protective membranes that surround the brain and spinal cord.
Meninges
Microscopic structure consisting of axons and dendrites in bundles like strands of rope.
Nerve
Crainial, spinal, and autonomic nerves make up the....?
Peripheral Nervous System
Large, interlacing network of nerves.
Plexus
Organ that recieves a nervous stimulation and passes it on to nerves within the body.
Receptor
Carry messages to the brain and spinal cord from a receptor.
Sensory Nerves
Change in the internal or external environment that evokes a response.
Stimulus
Depression or groove in the surface of the cerebral cortex.
Sulcus
Autonomic nerves that influence body functions involuntarily in times of stress.
Sympathetic Nerves

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