CNS
The CNS is made up of
The Brain & Spinal Cord
What are the two divisions of the PNS?
Autonomic and Somatic Nervous Divisions
What is a junction between two neurons is called?
A Synapse
What is another name for a stroke?
Cerebrovascular Accident
Congenital Brain Defects are abnormalities found at what stage of life?
Birth
What is the largest part of the brain?
Cerebrum
Neurons of the Parasympathetic Nervous System emerge from what parts of the body
Brain & Spinal Cord
What part of a neuron is specialized to receive neural impulses?
Neurotransmitters
What are the two main types of strokes?
Ischemic and Hemmorhagic
What are some of the most common causes of brain defects?
Although there can't be a single specific cause. Possible causes include: infection, drug use, trauma, and/or genetics.
What type of cells account for more than 75% of the cells in the CNS?
Glial Cells
What nerve systems are a part of the PNS?
Cranial and Spinal Nerves
What cover some neurons and speeds the conduction of nerve impulses?
Myelin
What is the largest lifestyle habit that increases the risk for a stroke in younger adults?
Smoking
When do the identifying markers of brain disorders first appear?
When fetal development is interrupted, generally in the first 12 weeks of pregnancy.
In the CNS, bundles of axons are known as what?
Tracts
Parasympathetic Nerves decrease
Heart Rate in the body
When the voltage across the neuron membrane reaches threshold level, what moves down the axon?
An action potential
Name a symptom of a stroke
Confusion, Weakness of Arm or Leg, Headache, Trouble Seeing
What kind of tests can be done to find Congenital Brain Abnormalities in babies?
CT Scan or MRI
What are star shaped Glial Cells called that support, protect and communicate with neurons?
Astrocytes
The first efferent neurons synapse with the second efferent neurons in what part of the body
The Terminal Ganglia or within the walls of the organs they innervate
During what part of an action potential do voltage-activated sodium channels open, allowing sodium ions to pass into the cell?
Transmission
What is the difference between a stroke and TIA?
A stroke
The Congenital Brain Defects typically effect what parts of the body?
Bone and soft tissue of the head and spine.