Unit 2 Flashcards
a neural impluse; a brief electrical charge that travels down an axon
action potential
the strength of a response of a nerve cell or muscle fiber is not dependent upon the strength of the stimulus
All or None Response
the center of emotion and motivations, linked to emotion, fear, & aggression tells your body to produce adrenaline
amygdala
a molecule that blocks a neurotransmitter’s release
antagonist
any area in the cerebral cortex that is not in the motor, sensory, visual, or auditory cortexes: process/integrate information from the senses
association areas
controls the glands and the involuntary muscles of internal organs: sympathetic & parasympathetic
autonomic nervous system
a long tubular structure in a neuron that transmits action potentials
axon
the oldest part and central core of the brain, connects brain and spinal cord, responsible for automatic survival functions
brainstem
the part of a neuron that convents oxygen, sugars, and other nutrients into energy, contains nucleus
cell body
the brain and the spinal cord, centrally located in the body, communication highway between rest of body and brain
central nervous system
attached to rear of the brainstem, fine motor movements, procedural memory: coordinates voluntary movement & balance
cerebellum
the intricate fabric of interconnected neural cells, wrinkly outer layer of the cerebellum
cerebral cortex
the study of brain activity linked with mental activity
cognitive neuroscience
band of neural fibers that connects the 2 brain hemispheres together and allows them to communicate
corpus callosum
special x-ray equipment that produces multiple images of inside the body and a computer joins them together
CT scan
branches off the nerve cell and receives chemical messages coming from other neurons
dendrite
records electrical brain activity, electrodes to the outside of the head, brain’s electrical signals traced on paper
EEG
a system of glands that secretes hormones into the circulatory system
endocrine system
neurotransmitters linked to reduced pain, increased pleasure
hypersensitivity to pain –> TOO MUCH
hypersensitivity to pain –> TOO LITTLE
endorphins
functional magnetic resource imaging observe bloodflow in the brain(glucose + oxygen levels) rather than just magnetic fields in a traditional MRI
fMRI
deals with abstract thought, emotional control, planning, & judgment control panel of our personality & ability to communicate
frontal lobes
non-neuronal cells that provide support & protection for neurons in CNS as well as nutrition outnumber neurons 50:1
glial cells
responsible for the formation of memories, processes/stores them, close to emotional centers so memories can be emotional
hippocampus