Quiz 3: Nervous System Overview Flashcards
What are the two anatomical divisions of the nervous system?
The central nervous system (brain and spinal cord) and peripheral nervous system (spinal nerves, cranial nerves, sensory receptors)
What are the two functional divisions of the nervous system?
Autonomic Nervous System (automatic functions of the Viscera (internal organs)
Somatic Nervous System (what you are used to thinking of as the nervous system
–The Voluntary nervous system
—-Skeletal (somatic) muscle control
—-Sensory information
The _______ system gets your body ready to respond to a threat
Parasympathetic nervous system (Autonomic subsystem)
What are the two divisions of the Somatic Motor System?
White matter in the CNS is called a ____
tract
What is the law of specific nerve energies?
Why do you see lights flash when you press on the corner of your closed eye?
Although each type of receptor is specialized, it will respond to extreme amounts of other stimulation.
Efferent neurons are usually __________ neurons that travel from the __________ to the __________
Motor neurons
brain –> body
Cell bodies (grey matter) in the CNS are called ______
nuclei
Axons (white matter) in the PNS are called _____
nerves
What are the sensory receptors in your retina that are specialized to receive light energy?
photoreceptors
List one tract in the nervous system
Corpus callosum
