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19 Cards in this Set

  • Front
  • Back
Biological Psychology
A branch of psychology concerned with the links b/t biology and behavior
Acetylcholine (ACh)
A neurotransmitter that, among its functions, triggers muscle contractions
Action Potential
A neural impulse; a brief electrical charge that travels down an axon. The action potential is generated by the movement of positively charged atoms in and out of channels in the axon’s membrane
Autonomic Nervous System
The part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart). Its sympathetic division arouses; its parasympathetic division calms.
The extension of a neuron, ending in branching terminal fibers, through which messages pass to other neurons or to muscles or glands
Central Nervous System
The brain and spinal cord
The bushy, branching extensions of a neuron that receive messages and conduct impulses toward the cell body
“morphine within” – natural, opiate-like neurotransmitters linked to pain control and to pleasure
Central nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs
Motor Neurons
Neurons that carry outgoing information from the central nervous system to the muscles and glands
Nervous System
The body’s speedy, electrochemical communication system, consisting of all the nerve cells of the peripheral and central nervous systems
A nerve cell; the basic building block of the nervous system
Chemical messengers that traverse the synaptic gaps between neurons. When released by the sending neuron, neurotransmitters travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether that neuron will generate a neural impulse.
Parasympathetic Nervous System
The division of the autonomic nervous system that calms the body, conserving its energy
A simple, automatic, inborn response to a sensory stimulus, such as the knee-jerk response
Somatic Nervous System
The division of the peripheral nervous system that controls the body’s skeletal muscles. Also called the skeletal nervous system.
Sympathetic Nervous System
The division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations
The junction b/t the axons tip of the sending neuron and the dendrite or cell body of the receiving neuron. The tiny gap at this junction is called the synaptic gap or cleft
The level of stimulation required to trigger a neural impulse