CNS/PNS Flashcards
CNS
the brain and spinal cord, which together mediate behavior
PNS
all the neurons in the body outside the brain and spinal cord; somatic NS, autonomic NS, enteric NS
Cerebrum (forebrain)
Major structure for the forebrain, which consists of two mirror image hemispheres (L/R) and is responsible for most conscious behavior
Hemispheres
one side of the cerebrum
Neocortex (new cortex)
outermost layer of the forebrain that is visibly folded in humans and other large brained animals; composed of about six layers of cells
brainstem
central structure of the brain that is responsible for most life sustaining, unconscious behavior
cerebellum
major brainstem structure specialized for learning and coordinating movements; assists the cerebrum in generating many behaviors
embodied behavior
theory that the movements we make and the movements we perceive in others are central to communication
Afferent “affective”
sensory (incoming) pathways; emotion, feeling, and affection
Efferent “effector”
motor (outgoing) pathways; muscle
nerve net
simple nervous system that has no center
bilateral symmetry
body parts that have a mirror image, such as hands and not heart
segmentation
division into a number of parts that are similar, similarly organized body segments
ganglia
collection of nerve cells that functions somewhat like a brain
somatic nervous system (SNS)
contains cranial nerves and spinal nerves to and from the muscles, joints, and skin, informs the CNS about the position and movement of body parts
