Psychology 1000 Chapter Notes - Chapter 3: Myelin, Axon Terminal, Peripheral Nervous System

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Shauna Burke

Document Summary

Neurons: neuron: nerve cells that constitute the basic building blocks of the nervous system. Supported by glial cells - > manufacture protein, absorb toxins/waste. Blood brain barrier: specialized lining of cells in brain"s blood vessels that screen out foreign substances while letting nutrients pass through to neurons. Synaptic transmission: synapse: microscopic space b/w neurons where nerve impulse is biochemically transmitted, synaptic cleft: tiny gap b/w axon terminal of one neuron & dendrite of next neuron. Voluntary movement, emotional arousal, learning, motivation, pleasure. Sensory neurons: transmit messages from eyes, ears, other sensory receptors. Motor neurons: send messages from brain, spinal cord to muscles: autonomic ns. Emotions, stress: sympathetic ns: activation/arousal, fight-or-flight response (increased heart rate, blood pressure, etc. , parasympathetic ns: slows down body processes, maintains/returns to resting state. Chapter 3: biological foundations of behaviour 4: homeostasis: maintain equilibrium/balance. Central nervous system: spinal cord: spinal reflexes- stimulus-response sequences, brain: consumes 20% oxygen, never rests.