Vocab (09/26/13) Flashcards
(30 cards)
MRI (Magnetic Resonance Imaging)
Uses magnetic fields and radio waves to produce images
Motor neurons
Neurons that carry info from CNS to muscle glands
Myelin sheath
Layer of fatty tissue encasing the fibers
Nerves
Neural cables containing many axons
Nervous system
The body’s speedy, electrochemical communication network
Neural networks
Interconnected neural cells
Neuron
A nerve cell
Neurotransmitters
Messengers that transverse the synaptic gaps
Occipital lobes
receives visual info
Parasympathetic nervous system
Autonomic nervous system that calms the body
Parietal lobes
Receives sensory input for touch and body position
Peripheral nervous system
connect the CNS to the rest of the body
PET (Positron Emission Tomography)
Detects where a radioactive form of glucose goes
Pituitary gland
The endocrine system’s most influential gland
Plasticity
Brains capacity for modification
Reflex
Inborn response to a sensory stimulus
Reticular formation
Nerve network in the brainstem that controls arousal
Sensory cortex
registers/processes body touch & movement sensations
Sensory neurons
Carry info from sense receptors to the CNS
Somatic Nervous system
Controls the body’s skeletal muscles
Split brain
2 hemispheres of brain are isolated by cutting
Sympathetic nervous system
Arouses the body, mobilizing energy in stressful situations
Synapse
Junction between axon tip and dendrite
Temporal lobes
receives auditory info
