Anatomy of the CNS
The central nervous system consists of which parts/organs?
the brain and spinal cord
The peripheral nervous system consists of which parts/organs?
the spinal and cranial nerves
Efferent pathways are also called _____ pathways.
sensory
The Schwann cell forms a myelin sheath around the _____.
axon
Which tree-like structure is located within the cerebellum?
arbor vitae
Control of temperature, endocrine activity, metabolism, and thirst are functions associated with the
hypothalamus
Where is the cervical plexus located?
the neck
What are reflexes that result from practice and repetition?
learned or acquired reflexes
How many sodium ions does the "sodium-potassium pump" pump out of the cell at a time?
3
Name one of the three parts of the brain stem.
medulla oblongata, pons, & midbrain
Sally has a brain injury. She knows what she wants to say but can't vocalize the words. The part of her brain that deals with the ability to speak is the...
Broca's area
What two divisions make up the peripheral nervous system?
sensory (afferent) division & motor (efferent) division
Which spinal nerve is involved in information from taste buds and swallowing?
glossopharyngeal
The chemical messenger between neurons or a neuron and its target muscle is ______.
neurotransmitter
Motor areas are found within which lobe of the brain?
frontal lobe
In which stage of sleep can night terrors and sleep-walking occur?
stage 4
Which spinal nerves (letter and number) make up the thoracic nerves?
T1-T12
Cells in the skin are an example of which component of a reflex arc?
receptor
The tiny space between neurons or a neuron and its target muscle is the
synapse or synaptic cleft
Where is the reticular activating system (RAS) located?
brain stem
What is the name for an inflammation of the brain?
encephalitis
abducens nerve (VI)
If you ate ice cream, what receptors would be activated?
thermoreceptors
Multiple sclerosis (MS) is an autoimmune disease in which myelin sheaths in the CNS are gradually destroyed. Would you expect the speed of brain impulses to speed up or slow down in someone with this disease?
impulse conduction slows and eventually ceases