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AP Psychology Myers Unit 3
Terms in this set (33)
A branch of psychology concerned with the links between biology and behavior
A nerve cell; the basic building block of the nervous system.
Neurons that carry incoming information from the sensory receptors to the brain and spinal cord.
Neurons that carry outgoing information from the brain and spinal cord to the muscles and glands.
neurons within the brain and spinal cord that communicate internally and intervence between sensory and motor inputs
Branchlike parts of a neuron that are specialized to receive information.
A threadlike extension of a neuron that carries nerve impulses away from the cell body.
A layer of fatty tissue segmentally encasing the fibers of many neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from one node to the next.
A neural impulse; a brief electrical charge that travels down an axon.
Level of stimulation needed to trigger a neural impulse
A junction where information is transmitted from one neuron to the next.
Chemical messengers that cross 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.
A neurotransmitter's reabsorption by the sending neuron
"morphine within"--natural, opiatelike neurotransmitters linked to pain control and to pleasure.
A neurotransmitter that enables learning and memory and also triggers muscle contraction
A neurotransmitter associated with movement, attention and learning and the brain's pleasure and reward system.
Affects mood, hunger, sleep, and arousal
A neurotransmitter that influences mood and arousal. Undersupply can depress mood
A major inhibitory neurotransmitter. Not enough=seizures, tremors, and insomnia.
A major excitatory neurotransmitter; involved in memory. Oversupply can overstimulate brain, producing migraines or seizures.
the body's speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous systems
Central nervous system
the brain and spinal cord
Peripheral nervous system
the sensorry and motor neurons that connect the central nervous to the rest of the body
Bundled axons that form neural "cables" connecting the central nervous system with muscles, glands, and sense organs.
Somatic nervous system
Division of the PNS that controls the body's skeletal muscles. (Voluntary)
Autonomic nervous system
A subdivision of the peripheral nervous system. Controls involuntary activity of visceral muscles and internal organs and glands.
Sympathetic nervous system
the division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations
Parasympathetic nervous system
A subdivision of the autonomic nervous system that calms the body after action and also retains the body functioning at is normal state (homeostasis)
A simple, automatic, inborn response to a sensory stimulus, such as the knee-jerk response.
the body's "slow" chemical communication system; a set of glands that secretes hormones into the bloodstream
Chemical messengers, mostly those manufactured by the endocrine glands, that are produced in one tissue and affect another
A pair of endocrine glands that sit just above the kidneys and secrete hormones that help arouse the body in times of stress.
Endocrine gland attached to the base of the brain that secretes hormones that affect the function of other glands as well as hormones that act directly on physical processes.
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