Central Nervous System
The major regions of the brain.
What is the cerebrum, diencephalon, brain stem, and cerebellum?
Surrounds each neuron.
What is endoneurium?
Supporting cells that insulate, support, and protect neurons.
What is neuroglia?
Occurs when an external force injures the brain.
What are traumatic brain injuries?
Connects the components of the nervous system.
What are nerves?
The largest and most superior part of the brain.
What is the cerebrum?
31 pairs of this exit from the vertebral column.
What are spinal nerves?
Occurs when the myelin sheath around neurons is gradually destroyed and hardens.
What is multiple sclerosis?
Sensory input, integration, and motor output are primary functions of this.
What is the nervous system?
Grooves or fissures that divide the cerebral cortex into sections.
What are cerebral lobes?
Motor subdivision of the PNS that automatically controls body activities.
Covering composed of a whitish, fatty material.
What is myelin?
Motor system disorder that leads to trembling of the hands, arms, legs, jaw or face, as well as impaired balance and coordination.
What is Parkinson's disease?
Fibers that conduct impulses away from the cell body.
What are axons?
Area of the brain responsible for auditory perception; the olfactory area is located deep inside of this.
What is the temporal lobe?
Includes the sympathetic and parasympathetic divisions.
What are the two divisions of the autonomic nervous system?
Gaps between Schwann cells that allow impulses to jump from node to node.
What are Nodes of Ranvier?
Death of brain cells that occurs when an area of the brain is deprived of oxygen due to poor blood flow.
What is a stroke?
Plasma membrane at rest.
What is polarized?
Continually formed from plasma by clusters of capillaries in cavities called ventricles.
What is cerebrospinal fluid?
Mobilizes the body during extreme situations.
What is the sympathetic division of the ANS?
This happens when K+ ions diffuse out to restore the negative charge on the inside of the neuron membrane.
What is a concussion?
These things excite neurons.
What is light, sound waves, pressure, chemicals, and neurotransmitters.