Divisions of the NS
This system consists only of the brain and spinal cord.
What is the Central Nervous System (CNS)?
Parts of the brain that are more forward are called this.
What is rostral or anterior?
The name for brain tissue that appears darker pink/gray and is dense with cell bodies.
What is gray matter?
This type of slice is a vertical cut that divides the brain into front and back sections.
What is a coronal slice?
The brain is the main organ where movement originates, thoughts develop, and this is housed.
What is consciousness?
A signal leaving the CNS is called this type of signal.
What is an efferent signal?
Brain structures closer to the sides of the brain are described as being this.
What is lateral?
These layers of fatty lipids cause white matter to appear white and allow neurons to send signals rapidly.
What is myelin?
A cut that divides the brain into top (superior) and bottom (inferior) sections is this type of projection.
What is a horizontal projection?
The major white matter tract that allows communication between the two hemispheres of the brain.
What is the corpus callosum?
When a white matter pathway crosses from one hemisphere to another, it is called this process.
What is decussation?
Rostral and anterior are used interchangeably, as are these two directional terms.
What are caudal and posterior?
White matter represents these for communication within the nervous system.
What are pathways?
This specific slice divides the brain into left and right sections.
What is a parasagittal slice?
Although useful for identification, the anatomical language of the brain does not tell us anything about this characteristic.
What is function?