The part that controls movement and concentration, and speech.
What is the Frontal Lobe?
100
dendrite>> nerve cell body>>axon >>terminus
describe the flow of an action potential?
100
A neuron fiber that conveys signals from its tip inward, toward the rest of the neuron; in a motor neuron branched extension that convey nerve signals toward the cell body.
What is the dendrite?
100
3-5 years
What is the number of years an ALS will live for after diagnosis?
100
power wheelchair (move) and a ventilator (breathe) may be needed
What can be used to help an ALS patient?
200
The mailroom and mailman of the brain
What is the Thalamus?
200
The sodium/potassium pump is turned off.
When is the neuron at resting potential?
200
A neuron fiber that conducts signals to another neuron or to an effector cell. These can be over a meter long.
A series of Schwann cells, each wound around, and thus insulating, the axon of a nerve cell in vertebrates. Each pair of cells in the sheath is separated by a space called a node of Ranvier.
What is the Myelin Sheath ?
300
muscles are paralyzed or weak
not be able to stand back up if he/she falls
weakness in swallowing; potential choking; difficulty eating and managing saliva
weakness in breathing
uncontrollable laughing or crying
What are the symptoms of ALS?
300
the immune system may attack some of the body's cells, potentially killing nerve cells
What is Disorganized immune response?
400
A stroke that causes loss of speech and numbers of the right side of the body has probably damaged brain tissue in the _____ lobe.
What is the parietal lobe?
400
What kind of neurons does the Afferent system carry?
Sensory neurons
400
An unmyelinated region (space between each Schwann cell) on a myelinated axon of a nerve cell, where nerve signals are regenerated. Goes at 150m/sec or 330mi/hr.
What are the Nodes of Ranvier?
400
The mutated gene that could cause ALS in familial cases.
What is the SOD1 gene?
400
drug that modestly slows the progression of ALS in some people
What is Riluzole
500
Hand-eye coordination is an example of such control from which part of the brain?
What is Cerebellum?
500
What is in the sympathetic division?
Fight or flight response = increases heart rate and activates adrenaline etc.
500
A junction between two neurons, or between a neuron and an effector cell; Electrical or chemical signals are relayed from one cell to another at a synapse.
What is the Synapse?
500
Cells degenerate and die, ceasing to send messages to muscles, which in turn causes them to weaken and waste away & muscles no longer receive signals to move