Flashcards
Chapter 3 Biopsychology flashcards
Flashcards do conjunto (25)
- 1dendritesreceive the information from other neurons
- 2soma (cell body)contains the nucleus of the cell. tells the cells to fire or not to fire
- 3axonconducting fiber, carries the information down the neuron
- 4myelin sheathinsulating fatty layer that speeds transmission
- 5axon terminal buttonsbranches at the end of the axon that contain neurotransmitters and send them shooting across the synapses (reuptake)
- 6neurotransmittersenable neurons to communicate
- 7synapsethe space in between neurons
- 8Biological psychologistsapplication of the principles of biology to the study of physiological, genetic, and developmental mechanisms of behavior in humans and other animals.
- 9sensory neuronscarry information to the brain
- 10motor neuronscarry information from the brain
- 11interneuronsenable communication between sensory or motor neurons and the central nervous system
- 12mirror neuronsneuron that fires both when an animal acts and when the animal observes the same action performed by another
- 13action potentialshort lasting event in which the electrical membrane potential of a cell rapidly rises and falls
- 14all or none principlethe strength by which a nerve or muscle fiber responds to a stimulus is independent of the strength of the stimulus
- 15resting potentialpolarization of cellular fluid within a neuron
- 16thresholdminimum amount of stimulation needed to start a neural impulse
- 17excitatory neurotransmitterswhat stimulates the brain
- 18inhibitory neurotransmitterscalms the brain and help create balance
- 19reuptakeabsorption by a presynaptic nerve ending of a neurotransmitter that it has secreted
- 20Acetylcholine (Ach)compound that occurs throughout the nervous system, functions as a neurotransmitter.
- 21Dopaminecompound present in the body as neurotransmitter and a precursor of other substances including epinephrine
- 22serotonincompound present in blood platelets and serum that constricts the blood vessels and acts as a neurotransmitter
- 23gamma aminobutyric acid (GABA)an amino acid that acts to inhibit the transmission of nerve impulses in the central nervous system
- 24endorphinsendogenous opioid neuropeptides. Produced by the central nervous system and the pituitary gland
- 25neuronsbuilding blocks that comprise our nervous system